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Article ; Online: Measurement of Differential Branching Fractions of Inclusive B→X_{u}ℓ^{+}ν_{ℓ} Decays.

Cao, L / Sutcliffe, W / Van Tonder, R / Bernlochner, F U / Adachi, I / Aihara, H / Asner, D M / Aushev, T / Ayad, R / Babu, V / Bahinipati, S / Behera, P / Belous, K / Bennett, J / Bessner, M / Bilka, T / Biswal, J / Bobrov, A / Bračko, M /

Branchini, P / Browder, T E / Budano, A / Campajola, M / Červenkov, D / Chang, M-C / Chang, P / Cheon, B G / Chilikin, K / Cho, H E / Cho, K / Cho, S-J / Choi, Y / Choudhury, S / Cinabro, D / Cunliffe, S / Czank, T / Dash, N / De Pietro, G / Dhamija, R / Di Capua, F / Dingfelder, J / Doležal, Z / Dong, T V / Dubey, S / Epifanov, D / Ferber, T / Ferlewicz, D / Frey, A / Fulsom, B G / Garg, R / Gaur, V / Gabyshev, N / Garmash, A / Giri, A / Goldenzweig, P / Gu, T / Gudkova, K / Halder, S / Hara, T / Hartbrich, O / Hayasaka, K / Hernandez Villanueva, M / Hou, W-S / Hsu, C-L / Inami, K / Ishikawa, A / Itoh, R / Iwasaki, M / Jacobs, W W / Jang, E-J / Jia, S / Jin, Y / Joo, K K / Kahn, J / Kang, K H / Kichimi, H / Kiesling, C / Kim, C H / Kim, D Y / Kim, S H / Kim, Y-K / Kimmel, T D / Kinoshita, K / Kodyš, P / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Križan, P / Kroeger, R / Krokovny, P / Kuhr, T / Kulasiri, R / Kumar, M / Kumar, R / Kumara, K / Kuzmin, A / Kwon, Y-J / Lee, S C / Li, C H / Li, J / Li, L K / Li, Y B / Li Gioi, L / Libby, J / Lieret, K / Liventsev, D / MacQueen, C / Masuda, M / Merola, M / Metzner, F / Miyabayashi, K / Mizuk, R / Mohanty, G B / Mohanty, S / Mrvar, M / Nakao, M / Natochii, A / Nayak, L / Niiyama, M / Nisar, N K / Nishida, S / Nishimura, K / Ogawa, S / Ono, H / Onuki, Y / Oskin, P / Pakhlova, G / Pardi, S / Park, H / Park, S-H / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Piilonen, L E / Podobnik, T / Popov, V / Prencipe, E / Prim, M T / Röhrken, M / Rostomyan, A / Rout, N / Rozanska, M / Russo, G / Sahoo, D / Sandilya, S / Sangal, A / Santelj, L / Sanuki, T / Savinov, V / Schnell, G / Schueler, J / Schwanda, C / Schwartz, A J / Seino, Y / Senyo, K / Sevior, M E / Shapkin, M / Sharma, C / Shen, C P / Shiu, J-G / Shwartz, B / Simon, F / Sokolov, A / Solovieva, E / Starič, M / Strube, J F / Sumihama, M / Sumiyoshi, T / Takizawa, M / Tamponi, U / Tanida, K / Tao, Y / Tenchini, F / Trabelsi, K / Uchida, M / Uglov, T / Uno, S / Urquijo, P / Vahsen, S E / Varner, G / Varvell, K E / Waheed, E / Wang, C H / Wang, E / Wang, M-Z / Wang, P / Wang, X L / Watanabe, M / Watanuki, S / Werbycka, O / Won, E / Yabsley, B D / Yan, W / Yang, S B / Ye, H / Yin, J H / Zhang, Z P / Zhilich, V / Zhukova, V

Physical review letters

2022 Volume 127, Issue 26, Page(s) 261801

Abstract: The first measurements of differential branching fractions of inclusive semileptonic B→X_{u}ℓ^{+}ν_{ℓ} decays are performed using the full Belle data set of 711 fb^{-1} of integrated luminosity at the ϒ(4S) resonance and for ℓ=e, μ. With the ... ...

Abstract	The first measurements of differential branching fractions of inclusive semileptonic B→X_{u}ℓ^{+}ν_{ℓ} decays are performed using the full Belle data set of 711 fb^{-1} of integrated luminosity at the ϒ(4S) resonance and for ℓ=e, μ. With the availability of these measurements, new avenues for future shape-function model-independent determinations of the Cabibbo-Kobayashi-Maskawa matrix element \|V_{ub}\| can be pursued to gain new insights in the existing tension with respect to exclusive determinations. The differential branching fractions are reported as a function of the lepton energy, the four-momentum-transfer squared, light-cone momenta, the hadronic mass, and the hadronic mass squared. They are obtained by subtracting the backgrounds from semileptonic B→X_{c}ℓ^{+}ν_{ℓ} decays and other processes, and corrected for resolution and acceptance effects.
Language	English
Publishing date	2022-01-14
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.127.261801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Evidence for X(3872)→J/ψπ^{+}π^{-} Produced in Single-Tag Two-Photon Interactions.

Teramoto, Y / Uehara, S / Masuda, M / Adachi, I / Aihara, H / Al Said, S / Asner, D M / Atmacan, H / Aushev, T / Ayad, R / Babu, V / Behera, P / Beleño, C / Bennett, J / Bhardwaj, V / Bhuyan, B / Bilka, T / Biswal, J / Bonvicini, G /

Bozek, A / Bračko, M / Browder, T E / Campajola, M / Červenkov, D / Chang, M-C / Chang, P / Chekelian, V / Chen, A / Cheon, B G / Chilikin, K / Cho, K / Cho, S-J / Choi, S-K / Choi, Y / Choudhury, S / Cinabro, D / Cunliffe, S / De Nardo, G / Di Capua, F / Doležal, Z / Dong, T V / Eidelman, S / Ferber, T / Fulsom, B G / Garg, R / Gaur, V / Gabyshev, N / Garmash, A / Giri, A / Goldenzweig, P / Greenwald, D / Hadjivasiliou, C / Hara, T / Hartbrich, O / Hayasaka, K / Hayashii, H / Hedges, M T / Hernandez Villanueva, M / Hou, W-S / Hsu, C-L / Iijima, T / Inami, K / Inguglia, G / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jacobs, W W / Jang, E-J / Jia, S / Jin, Y / Joo, C W / Joo, K K / Kahn, J / Kaliyar, A B / Kang, K H / Karyan, G / Kato, Y / Kawasaki, T / Kichimi, H / Kiesling, C / Kim, B H / Kim, D Y / Kim, S H / Kim, Y-K / Kimmel, T D / Kinoshita, K / Kodyš, P / Korpar, S / Kotchetkov, D / Križan, P / Kroeger, R / Krokovny, P / Kuhr, T / Kulasiri, R / Kumar, R / Kumara, K / Kuzmin, A / Kwon, Y-J / Lalwani, K / Lange, J S / Lee, I S / Lee, S C / Lewis, P / Li, L K / Li, Y B / Li Gioi, L / Libby, J / Lieret, K / Liptak, Z / Liventsev, D / Luo, T / MacQueen, C / Matsuda, T / Matvienko, D / Merola, M / Miyabayashi, K / Miyata, H / Mohanty, G B / Mohanty, S / Moon, T J / Mori, T / Mrvar, M / Mussa, R / Nakano, E / Nakao, M / Nakazawa, H / Natkaniec, Z / Natochii, A / Nayak, M / Nisar, N K / Nishida, S / Ogawa, K / Ogawa, S / Ono, H / Onuki, Y / Pakhlov, P / Pakhlova, G / Pardi, S / Park, H / Park, S-H / Patra, S / Paul, S / Pedlar, T K / Pestotnik, R / Piilonen, L E / Podobnik, T / Popov, V / Prencipe, E / Prim, M T / Ritter, M / Rostomyan, A / Rout, N / Russo, G / Sahoo, D / Sakai, Y / Sandilya, S / Sangal, A / Santelj, L / Sanuki, T / Savinov, V / Schnell, G / Schueler, J / Schwanda, C / Seino, Y / Senyo, K / Sevior, M E / Shapkin, M / Shebalin, V / Shiu, J-G / Singh, J B / Solovieva, E / Starič, M / Stottler, Z S / Sumihama, M / Sumisawa, K / Sumiyoshi, T / Sutcliffe, W / Takizawa, M / Tamponi, U / Tenchini, F / Uchida, M / Uglov, T / Unno, Y / Uno, S / Urquijo, P / Usov, Y / Van Tonder, R / Varner, G / Vinokurova, A / Vorobyev, V / Waheed, E / Wang, C H / Wang, E / Wang, M-Z / Wang, P / Wang, X L / Watanabe, M / Won, E / Xu, X / Yabsley, B D / Yang, S B / Ye, H / Yelton, J / Yin, J H / Zhang, Z P / Zhilich, V / Zhukova, V / Zhulanov, V

Physical review letters

2021 Volume 126, Issue 12, Page(s) 122001

Abstract: We report the first evidence for X(3872) production in two-photon interactions by tagging either the electron or the positron in the final state, exploring the highly virtual photon region. The search is performed in e^{+}e^{-}→e^{+}e^{-}J/ψπ^{+}π^{-}, ... ...

Abstract	We report the first evidence for X(3872) production in two-photon interactions by tagging either the electron or the positron in the final state, exploring the highly virtual photon region. The search is performed in e^{+}e^{-}→e^{+}e^{-}J/ψπ^{+}π^{-}, using 825 fb^{-1} of data collected by the Belle detector operated at the KEKB e^{+}e^{-} collider. We observe three X(3872) candidates, where the expected background is 0.11±0.10 events, with a significance of 3.2σ. We obtain an estimated value for Γ[over ˜]_{γγ}B(X(3872)→J/ψπ^{+}π^{-}) assuming the Q^{2} dependence predicted by a cc[over ¯] meson model, where -Q^{2} is the invariant mass squared of the virtual photon. No X(3915)→J/ψπ^{+}π^{-} candidates are found.
Language	English
Publishing date	2021-03-23
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.126.122001
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for B^{+}→K^{+}νν[over ¯] Decays Using an Inclusive Tagging Method at Belle II.

Abudinén, F / Adachi, I / Adamczyk, K / Ahlburg, P / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, T / Aushev, V / Baur, A / Babu, V / Baehr, S / Bambade, P / Banerjee, Sw / Bansal, S / Baudot, J /

Becker, J / Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bianchi, F / Bilka, T / Biswas, D / Bozek, A / Bračko, M / Branchini, P / Braun, N / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Červenkov, D / Chang, P / Cheaib, R / Chekelian, V / Chen, C / Chen, Y-T / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, K / Cho, S-J / Choudhury, S / Cinabro, D / Corona, L / Cremaldi, L M / Cunliffe, S / Czank, T / Dattola, F / De La Cruz-Burelo, E / de Marino, G / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dort, K / Dubey, S / Duell, S / Dujany, G / Eidelman, S / Eliachevitch, M / Epifanov, D / Ferber, T / Ferlewicz, D / Fillinger, T / Finocchiaro, G / Fiore, S / Fodor, A / Forti, F / Frey, A / Fulsom, B G / Gabyshev, N / Ganiev, E / Garcia-Hernandez, M / Garmash, A / Gaur, V / Gaz, A / Gellrich, A / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Golob, B / Grace, P / Gradl, W / Graziani, E / Greenwald, D / Guan, Y / Gudkova, K / Hadjivasiliou, C / Halder, S / Hara, K / Hartbrich, O / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hirata, H / Hoek, M / Hohmann, M / Hsu, C-L / Humair, T / Iijima, T / Inami, K / Inguglia, G / Irakkathil Jabbar, J / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jackson, P / Jacobs, W W / Jaffe, D E / Jin, Y / Joo, C / Junkerkalefeld, H / Kaliyar, A B / Kandra, J / Kang, K H / Karl, R / Karyan, G / Kawasaki, T / Ketter, C / Kichimi, H / Kiesling, C / Kim, C-H / Kim, D Y / Kim, Y-K / Kimmel, T D / Kodyš, P / Koga, T / Kohani, S / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Kraetzschmar, T M G / Krinner, F / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, M / Kumar, R / Kumara, K / Kunigo, T / Kurz, S / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lai, Y-T / La Licata, C / Lanceri, L / Lange, J S / Laurenza, M / Lautenbach, K / Le Diberder, F R / Lee, S C / Leitl, P / Levit, D / Lewis, P M / Li, C / Li, L K / Li, S X / Li, Y B / Libby, J / Lieret, K / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Lozar, A / Lueck, T / Lyu, C / Maggiora, M / Maity, S / Manfredi, R / Manoni, E / Marcello, S / Marinas, C / Martini, A / Masuda, M / Matsuda, T / Matsuoka, K / Matvienko, D / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Miyake, H / Mizuk, R / Mohanty, G B / Moser, H-G / Mrvar, M / Müller, F J / Murphy, C / Mussa, R / Nakamura, K R / Nakao, M / Natkaniec, Z / Natochii, A / Nayak, M / Nazaryan, G / Niebuhr, C / Nisar, N K / Nishida, S / Nishimura, K / Ogawa, S / Onishchuk, Y / Ono, H / Onuki, Y / Oskin, P / Ozaki, H / Pakhlov, P / Pakhlova, G / Paladino, A / Pang, T / Panta, A / Paoloni, E / Pardi, S / Park, H / Park, S-H / Paschen, B / Passeri, A / Pathak, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Pestotnik, R / Piccolo, M / Piilonen, L E / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, G / Popov, V / Praz, C / Prell, S / Prencipe, E / Prim, M T / Rad, N / Rados, P / Raiz, S / Remnev, M / Ripp-Baudot, I / Ritter, M / Rizzo, G / Rizzuto, L B / Robertson, S H / Rodríguez Pérez, D / Roney, J M / Rostomyan, A / Rout, N / Russo, G / Sahoo, D / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schueler, J / Schwanda, C / Schwartz, A J / Seddon, R M / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shiu, J-G / Shwartz, B / Sibidanov, A / Simon, F / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Sumihama, M / Sumisawa, K / Summers, D J / Sutcliffe, W / Suzuki, S Y / Svidras, H / Tabata, M / Takahashi, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Tanigawa, H / Taniguchi, N / Taras, P / Tenchini, F / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Uchida, M / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Usov, Y V / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vitale, L / Wach, B / Waheed, E / Wakeling, H M / Wan Abdullah, W / Wang, M-Z / Wang, X L / Warburton, A / Watanuki, S / Webb, J / Welsch, M / Wessel, C / Wiechczynski, J / Windel, H / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Ye, H / Yelton, J / Yin, J H / Yook, Y M / Yoshihara, K / Yuan, C Z / Yusa, Y / Zani, L / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I

Physical review letters

2021 Volume 127, Issue 18, Page(s) 181802

Abstract: A search for the flavor-changing neutral-current decay B^{+}→K^{+}νν[over ¯] is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider. The data sample corresponds to an integrated luminosity of 63 fb^{-1} ... ...

Abstract	A search for the flavor-changing neutral-current decay B^{+}→K^{+}νν[over ¯] is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider. The data sample corresponds to an integrated luminosity of 63 fb^{-1} collected at the ϒ(4S) resonance and a sample of 9 fb^{-1} collected at an energy 60 MeV below the resonance. Because the measurable decay signature involves only a single charged kaon, a novel measurement approach is used that exploits not only the properties of the B^{+}→K^{+}νν[over ¯] decay, but also the inclusive properties of the other B meson in the ϒ(4S)→BB[over ¯] event, to suppress the background from other B meson decays and light-quark pair production. This inclusive tagging approach offers a higher signal efficiency compared to previous searches. No significant signal is observed. An upper limit on the branching fraction of B^{+}→K^{+}νν[over ¯] of 4.1×10^{-5} is set at the 90% confidence level.
Language	English
Publishing date	2021-11-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.127.181802
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Precise Measurement of the D^{0} and D^{+} Lifetimes at Belle II.

Abudinén, F / Adachi, I / Adamczyk, K / Aggarwal, L / Ahmed, H / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, V / Babu, V / Bacher, S / Bae, H / Baehr, S / Bahinipati, S / Bambade, P / Banerjee, Sw /

Bansal, S / Barrett, M / Baudot, J / Bauer, M / Baur, A / Becker, J / Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhardwaj, V / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bobrov, A / Bodrov, D / Bolz, A / Bozek, A / Bračko, M / Branchini, P / Braun, N / Briere, R A / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Červenkov, D / Chang, M-C / Chang, P / Cheaib, R / Chekelian, V / Chen, C / Chen, Y-T / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cinabro, D / Corona, L / Cremaldi, L M / Cunliffe, S / Czank, T / Dattola, F / De La Cruz-Burelo, E / de Marino, G / De Nardo, G / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dubey, S / Duell, S / Dujany, G / Ecker, P / Epifanov, D / Ferber, T / Ferlewicz, D / Finocchiaro, G / Flood, K / Fodor, A / Forti, F / Fulsom, B G / Gabrielli, A / Gabyshev, N / Gaz, A / Gellrich, A / Giakoustidis, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Golob, B / Gradl, W / Graziani, E / Greenwald, D / Gu, T / Guan, Y / Gudkova, K / Guilliams, J / Hadjivasiliou, C / Halder, S / Hara, K / Hara, T / Hartbrich, O / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hirata, H / Hoek, M / Hohmann, M / Hsu, C-L / Humair, T / Iijima, T / Inami, K / Inguglia, G / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jacobs, W W / Jaffe, D E / Jang, E-J / Jia, S / Jin, Y / Junkerkalefeld, H / Kakuno, H / Kaliyar, A B / Kandra, J / Kang, K H / Karl, R / Karyan, G / Kato, Y / Kawasaki, T / Kiesling, C / Kim, C-H / Kim, D Y / Kim, Y-K / Kim, Y / Kimmel, T D / Kinoshita, K / Kodyš, P / Koga, T / Kohani, S / Konno, T / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Krinner, F / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, M / Kumar, R / Kumara, K / Kurz, S / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lalwani, K / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Lautenbach, K / Le Diberder, F R / Lee, S C / Leitl, P / Levit, D / Li, C / Li, L K / Libby, J / Lieret, K / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Lueck, T / Lyu, C / Manfredi, R / Manoni, E / Marinas, C / Martini, A / Matsuda, T / Matsuoka, K / Matvienko, D / McKenna, J A / Meier, F / Merola, M / Metzner, F / Miller, C / Miyabayashi, K / Mizuk, R / Mohanty, G B / Molina-Gonzalez, N / Moon, H / Moser, H-G / Mrvar, M / Murphy, C / Mussa, R / Nakamura, I / Nakamura, K R / Nakao, M / Nakazawa, H / Natkaniec, Z / Natochii, A / Nazaryan, G / Niebuhr, C / Niiyama, M / Nisar, N K / Nishida, S / Nishimura, K / Ogawa, S / Onishchuk, Y / Ono, H / Onuki, Y / Oskin, P / Oxford, E R / Ozaki, H / Pakhlov, P / Paladino, A / Pang, T / Panta, A / Paoloni, E / Pardi, S / Park, H / Park, S-H / Paschen, B / Passeri, A / Pathak, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Pham, F / Piccolo, M / Piilonen, L E / Pinna Angioni, G / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, G / Popov, V / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purohit, M V / Purwar, H / Rad, N / Rados, P / Raiz, S / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Rizzuto, L B / Robertson, S H / Roney, J M / Rostomyan, A / Rout, N / Rozanska, M / Sahoo, D / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schueler, J / Schwanda, C / Schwartz, A J / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sfienti, C / Shiu, J-G / Shwartz, B / Sibidanov, A / Simon, F / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sumihama, M / Sutcliffe, W / Suzuki, S Y / Svidras, H / Tabata, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Tanigawa, H / Taniguchi, N / Tenchini, F / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Tsuboyama, T / Ueda, I / Uehara, S / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Usov, Y V / Vahsen, S E / van Tonder, R / Varner, G S / Vinokurova, A / Vitale, L / Vossen, A / Waheed, E / Wakeling, H M / Wang, E / Wang, M-Z / Wang, X L / Warburton, A / Watanabe, M / Welsch, M / Wessel, C / Wiechczynski, J / Won, E / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Ye, H / Yelton, J / Yin, J H / Yoshihara, K / Yusa, Y / Zani, L / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2021 Volume 127, Issue 21, Page(s) 211801

Abstract: We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The ... ...

Abstract	We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72 fb^{-1}. The results, τ(D^{0})=410.5±1.1(stat)±0.8(syst) fs and τ(D^{+})=1030.4±4.7(stat)±3.1(syst) fs, are the most precise to date and are consistent with previous determinations.
Language	English
Publishing date	2021-12-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.127.211801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Dalitz analysis of $D^{0}\to K^{-}\pi^{+}\eta$ decays at Belle

Belle Collaboration / Chen, Y. Q. / Li, L. K. / Yan, W. B. / Adachi, I. / Aihara, H. / Said, S. Al / Asner, D. M. / Atmacan, H. / Aulchenko, V. / Aushev, T. / Ayad, R. / Babu, V. / Badhrees, I. / Bahinipati, S. / Behera, P. / Bennett, J. / Bhardwaj, V. / Bilka, T. /

Biswal, J. / Bozek, A. / Bračko, M. / Browder, T. E. / Campajola, M. / Cao, L. / Červenkov, D. / Chang, M. -C. / Chekelian, V. / Chen, A. / Cheon, B. G. / Chilikin, K. / Cho, H. E. / Cho, K. / Choi, S. -K. / Choi, Y. / Choudhury, S. / Cinabro, D. / Cunliffe, S. / Dash, N. / De Nardo, G. / Di Capua, F. / Doležal, Z. / Dong, T. V. / Eidelman, S. / Epifanov, D. / Fast, J. E. / Ferber, T. / Ferlewicz, D. / Fulsom, B. G. / Garg, R. / Gaur, V. / Gabyshev, N. / Garmash, A. / Giri, A. / Goldenzweig, P. / Golob, B. / Hartbrich, O. / Hayasaka, K. / Hayashii, H. / Hou, W. -S. / Hsu, C. -L. / Inami, K. / Inguglia, G. / Ishikawa, A. / Itoh, R. / Iwasaki, M. / Iwasaki, Y. / Jacobs, W. W. / Jang, E. -J. / Jeon, H. B. / Jia, S. / Jin, Y. / Joo, K. K. / Kang, K. H. / Karyan, G. / Kawasaki, T. / Kim, D. Y. / Kim, S. H. / Kimmel, T. D. / Kinoshita, K. / Kodyš, P. / Korpar, S. / Križan, P. / Kroeger, R. / Krokovny, P. / Kuhr, T. / Kulasiri, R. / Kumar, R. / Kuzmin, A. / Kwon, Y. -J. / Lalwani, K. / Lange, J. S. / Lee, I. S. / Lee, S. C. / Li, Y. B. / Gioi, L. Li / Libby, J. / Lieret, K. / Liventsev, D. / MacNaughton, J. / MacQueen, C. / Masuda, M. / Matvienko, D. / Merola, M. / Miyabayashi, K. / Mizuk, R. / Mohanty, S. / Mussa, R. / Nakao, M. / Natkaniec, Z. / Nayak, M. / Nishida, S. / Ogawa, S. / Ono, H. / Oskin, P. / Pakhlov, P. / Pakhlova, G. / Pardi, S. / Park, H. / Patra, S. / Paul, S. / Pedlar, T. K. / Pestotnik, R. / Piilonen, L. E. / Podobnik, T. / Popov, V. / Prencipe, E. / Prim, M. T. / Rabusov, A. / Ritter, M. / Röhrken, M. / Rout, N. / Russo, G. / Sahoo, D. / Sanuki, T. / Savinov, V. / Schneider, O. / Schnell, G. / Schueler, J. / Schwanda, C. / Schwartz, A. J. / Seino, Y. / Senyo, K. / Sevior, M. E. / Shapkin, M. / Shebalin, V. / Shiu, J. -G. / Sokolov, A. / Solovieva, E. / Starič, M. / Stottler, Z. S. / Sumihama, M. / Sumiyoshi, T. / Sutcliffe, W. / Takizawa, M. / Tanida, K. / Tenchini, F. / Trabelsi, K. / Uchida, M. / Uglov, T. / Uno, S. / Urquijo, P. / Varner, G. / Vorobyev, V. / Wang, C. H. / Wang, E. / Wang, M. -Z. / Wang, P. / Watanabe, M. / Won, E. / Xu, X. / Yang, S. B. / Ye, H. / Yin, J. H. / Yuan, C. Z. / Yusa, Y. / Zhang, Z. P. / Zhilich, V. / Zhukova, V. / Zhulanov, V.

2020

Abstract: We present the results of the first Dalitz plot analysis of the decay $D^{0}\to K^{-}\pi^{+}\eta$. The analysis is performed on a data set corresponding to an integrated luminosity of 953 $\rm{fb}^{-1}$ collected by the Belle detector at the asymmetric- ... ...

Abstract	We present the results of the first Dalitz plot analysis of the decay $D^{0}\to K^{-}\pi^{+}\eta$. The analysis is performed on a data set corresponding to an integrated luminosity of 953 $\rm{fb}^{-1}$ collected by the Belle detector at the asymmetric-energy $e^{+}e^{-}$ KEKB collider. The Dalitz plot is well described by a combination of the six resonant decay channels $\bar{K}^{}(892)^0\eta$, $K^{-}a_0(980)^+$, $K^{-}a_2(1320)^+$, $\bar{K}^{}(1410)^0\eta$, $K^{}(1680)^-\pi^{+}$ and $K_2^{}(1980)^-\pi^{+}$, together with $K\pi$ and $K\eta$ S-wave components. The decays $K^{}(1680)^{-}\to K^{-}\eta$ and $K_{2}^{}(1980)^{-}\to K^{-}\eta$ are observed for the first time. We measure ratio of the branching fractions, $\frac{\mathcal{B}(D^{0}\to K^{-}\pi^{+}\eta)}{\mathcal{B}(D^{0}\to K^{-}\pi^{+})}=0.500\pm0.002{\rm(stat)}\pm0.020{\rm(syst)}\pm0.003{\rm (\mathcal{B}_{PDG})}$. Using the Dalitz fit result, the ratio $\frac{\mathcal{B}(K^{}(1680)\to K\eta)}{\mathcal{B}(K^{}(1680)\to K\pi)}$ is measured to be $0.11\pm0.02{\rm(stat)}^{+0.06}_{-0.04}{\rm(syst)}\pm0.04{\rm(\mathcal{B}_{\text{PDG}})}$; this is much lower than the theoretical expectations ($\approx1$) made under the assumption that $K^{}(1680)$ is a pure $1^{3}D_1$ state. The product branching fraction $\mathcal{B}(D^0\to [K_2^{}(1980)^-\to K^{-}\eta]\pi^{+})=(2.2^{+1.7}_{-1.9})\times10^{-4}$ is determined. In addition, the $\pi\eta^{\prime}$ contribution to the $a_0(980)^{\pm}$ resonance shape is confirmed with 10.1$\sigma$ statistical significance using the three-channel Flatt\'{e} model. We also measure $\mathcal{B}(D^0\to\bar{K}^{*}(892)^0\eta)=(1.41^{+0.13}_{-0.12})\%$. This is consistent with, and more precise than, the current world average $(1.02\pm0.30)\%$, deviates with a significance of more than $3\sigma$ from the theoretical predictions of (0.51-0.92)%. Comment: 11 pages, 2 figures
Keywords	High Energy Physics - Experiment
Subject code	551
Publishing date	2020-03-17
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Search for Axionlike Particles Produced in e^{+}e^{-} Collisions at Belle II.

Abudinén, F / Adachi, I / Aihara, H / Akopov, N / Aloisio, A / Ameli, F / Anh Ky, N / Asner, D M / Aushev, T / Aushev, V / Babu, V / Baehr, S / Bahinipati, S / Bambade, P / Banerjee, Sw / Bansal, S / Baudot, J / Becker, J / Behera, P K /

Bennett, J V / Bernieri, E / Bernlochner, F U / Bertemes, M / Bessner, M / Bettarini, S / Bhardwaj, V / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bračko, M / Branchini, P / Braun, N / Browder, T E / Budano, A / Bussino, S / Campajola, M / Casarosa, G / Cecchi, C / Červenkov, D / Chang, M-C / Chang, P / Cheaib, R / Chekelian, V / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Cinabro, D / Corona, L / Cremaldi, L M / Cunliffe, S / Dash, N / Dattola, F / De La Cruz-Burelo, E / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / De Yta-Hernandez, A / Di Capua, F / Doležal, Z / Dong, T V / Dort, K / Dossett, D / Dujany, G / Eidelman, S / Ferber, T / Ferlewicz, D / Fiore, S / Fodor, A / Forti, F / Fulsom, B G / Ganiev, E / Garg, R / Garmash, A / Gaur, V / Gaz, A / Gebauer, U / Gellrich, A / Geßler, T / Giordano, R / Giri, A / Gobbo, B / Godang, R / Goldenzweig, P / Golob, B / Gomis, P / Gradl, W / Graziani, E / Greenwald, D / Hadjivasiliou, C / Halder, S / Hartbrich, O / Hayasaka, K / Hayashii, H / Hearty, C / Hedges, M T / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hirata, H / Hoek, M / Hohmann, M / Hsu, C-L / Hu, Y / Inami, K / Inguglia, G / Irakkathil Jabbar, J / Ishikawa, A / Itoh, R / Jackson, P / Jacobs, W W / Jaffe, D E / Jang, E-J / Jia, S / Jin, Y / Joo, C / Kaliyar, A B / Kandra, J / Karyan, G / Kato, Y / Kichimi, H / Kiesling, C / Kim, C-H / Kim, D Y / Kim, H J / Kim, S-H / Kim, Y-K / Kimmel, T D / Kinoshita, K / Kleinwort, C / Kodyš, P / Koga, T / Kohani, S / Komarov, I / Korpar, S / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, M / Kumar, R / Kumara, K / Kurz, S / Kwon, Y-J / Lacaprara, S / La Licata, C / Lanceri, L / Lange, J S / Lee, I-S / Lee, S C / Leitl, P / Levit, D / Lewis, P M / Li, C / Li, L K / Li, Y B / Libby, J / Lieret, K / Li Gioi, L / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Luo, T / MacQueen, C / Maeda, Y / Manfredi, R / Manoni, E / Marcello, S / Marinas, C / Martini, A / Masuda, M / Matsuoka, K / Matvienko, D / Meggendorfer, F / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Mizuk, R / Azmi, K / Mohanty, G B / Moser, H-G / Mrvar, M / Müller, F J / Mussa, R / Nakamura, I / Nakao, M / Nakazawa, H / Natochii, A / Niebuhr, C / Nisar, N K / Nishida, S / Nouxman, M H A / Ogawa, K / Ogawa, S / Ono, H / Oskin, P / Ozaki, H / Pakhlov, P / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Park, H / Park, S-H / Paschen, B / Passeri, A / Pathak, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Piccolo, M / Piilonen, L E / Polat, G / Popov, V / Praz, C / Prencipe, E / Prim, M T / Purohit, M V / Rad, N / Rados, P / Rasheed, R / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Ritter, M / Ritzert, M / Rizzo, G / Robertson, S H / Rodríguez Pérez, D / Roney, J M / Rosenfeld, C / Rostomyan, A / Rout, N / Sahoo, D / Sakai, Y / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schwanda, C / Schwartz, A J / Seddon, R M / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shiu, J-G / Sibidanov, A / Simon, F / Sobie, R J / Soffer, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sumihama, M / Sumiyoshi, T / Summers, D J / Sutcliffe, W / Svidras, H / Tabata, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Tanigawa, H / Taras, P / Tenchini, F / Tonelli, D / Torassa, E / Trabelsi, K / Uchida, M / Uglov, T / Unger, K / Unno, Y / Uno, S / Urquijo, P / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vitale, L / Waheed, E / Wakai, M / Wakeling, H M / Wang, C H / Wang, M-Z / Wang, X L / Warburton, A / Watanabe, M / Watanuki, S / Webb, J / Wehle, S / Welsch, M / Wessel, C / Wiechczynski, J / Windel, H / Won, E / Wu, L J / Xu, X P / Yabsley, B / Yan, W / Yang, S B / Ye, H / Yonenaga, M / Yuan, C Z / Yusa, Y / Zani, L / Zhou, Q D / Zhukova, V I

Physical review letters

2020 Volume 125, Issue 16, Page(s) 161806

Abstract: We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e^{+}e^{-}→γa, a→γγ in the mass range 0.2

Abstract	We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e^{+}e^{-}→γa, a→γγ in the mass range 0.2<m_{a}<9.7 GeV/c^{2} using data corresponding to an integrated luminosity of (445±3) pb^{-1}. Light pseudoscalars interacting predominantly with standard model gauge bosons (so-called axionlike particles or ALPs) are frequently postulated in extensions of the standard model. We find no evidence for ALPs and set 95% confidence level upper limits on the coupling strength g_{aγγ} of ALPs to photons at the level of 10^{-3} GeV^{-1}. The limits are the most restrictive to date for 0.2<m_{a}<1 GeV/c^{2}.<br />
Language	English
Publishing date	2020-02-04
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.125.161806
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for an Invisibly Decaying Z^{'} Boson at Belle II in e^{+}e^{-}→μ^{+}μ^{-}(e^{±}μ^{∓}) Plus Missing Energy Final States.

Adachi, I / Ahlburg, P / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, T / Aushev, V / Aziz, T / Babu, V / Baehr, S / Bambade, P / Banerjee, Sw / Bansal, V / Barrett, M / Baudot, J / Becker, J /

Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertemes, M / Bessner, M / Bettarini, S / Bianchi, F / Biswas, D / Bozek, A / Bračko, M / Branchini, P / Briere, R A / Browder, T E / Budano, A / Burmistrov, L / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Červenkov, D / Chang, M-C / Cheaib, R / Chekelian, V / Chen, Y Q / Chen, Y-T / Cheon, B G / Chilikin, K / Cho, K / Cho, S / Choi, S-K / Choudhury, S / Cinabro, D / Corona, L / Cremaldi, L M / Cunliffe, S / Czank, T / Dattola, F / De La Cruz-Burelo, E / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Di Capua, F / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dort, K / Dossett, D / Dubey, S / Duell, S / Dujany, G / Eidelman, S / Eliachevitch, M / Fast, J E / Ferber, T / Ferlewicz, D / Finocchiaro, G / Fiore, S / Fodor, A / Forti, F / Fulsom, B G / Ganiev, E / Garcia-Hernandez, M / Garg, R / Gaur, V / Gaz, A / Gellrich, A / Gemmler, J / Geßler, T / Giordano, R / Giri, A / Gobbo, B / Godang, R / Goldenzweig, P / Golob, B / Gomis, P / Gradl, W / Graziani, E / Greenwald, D / Guan, Y / Hadjivasiliou, C / Halder, S / Hara, T / Hartbrich, O / Hayasaka, K / Hayashii, H / Hearty, C / Hedges, M T / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hoek, M / Hsu, C-L / Hu, Y / Iijima, T / Inami, K / Inguglia, G / Irakkathil Jabbar, J / Ishikawa, A / Itoh, R / Iwasaki, Y / Jacobs, W W / Jaffe, D E / Jang, E-J / Jeon, H B / Jia, S / Jin, Y / Joo, C / Joo, K K / Kahn, J / Kakuno, H / Kaliyar, A B / Kandra, J / Karyan, G / Kato, Y / Kawasaki, T / Kim, B H / Kim, C-H / Kim, D Y / Kim, K-H / Kim, S-H / Kim, Y K / Kim, Y / Kimmel, T D / Kindo, H / Kleinwort, C / Kodyš, P / Koga, T / Kohani, S / Komarov, I / Korpar, S / Kovalchuk, N / Kraetzschmar, T M G / Križan, P / Kroeger, R / Krokovny, P / Kuhr, T / Kumar, J / Kumar, M / Kumar, R / Kumara, K / Kurz, S / Kuzmin, A / Kwon, Y-J / Lacaprara, S / La Licata, C / Lanceri, L / Lange, J S / Lautenbach, K / Lee, I-S / Lee, S C / Leitl, P / Levit, D / Li, L K / Li, Y B / Libby, J / Lieret, K / Li Gioi, L / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Luo, T / Maeda, Y / Maggiora, M / Manoni, E / Marcello, S / Marinas, C / Martini, A / Masuda, M / Matsuda, T / Matsuoka, K / Matvienko, D / Meggendorfer, F / Mei, J C / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Miyake, H / Mizuk, R / Azmi, K / Mohanty, G B / Moon, T / Morii, T / Moser, H-G / Mueller, F / Müller, F J / Muller, Th / Muroyama, G / Mussa, R / Nakano, E / Nakao, M / Nayak, M / Nazaryan, G / Neverov, D / Niebuhr, C / Nisar, N K / Nishida, S / Nishimura, K / Nishimura, M / Oberhof, B / Ogawa, K / Onishchuk, Y / Ono, H / Onuki, Y / Oskin, P / Ozaki, H / Pakhlov, P / Pakhlova, G / Paladino, A / Panta, A / Paoloni, E / Park, H / Paschen, B / Passeri, A / Pathak, A / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Piccolo, M / Piilonen, L E / Popov, V / Praz, C / Prencipe, E / Prim, M T / Purohit, M V / Rados, P / Rasheed, R / Reiter, S / Remnev, M / Resmi, P K / Ripp-Baudot, I / Ritter, M / Rizzo, G / Rizzuto, L B / Robertson, S H / Rodríguez Pérez, D / Roney, J M / Rosenfeld, C / Rostomyan, A / Rout, N / Russo, G / Sahoo, D / Sakai, Y / Sandilya, S / Sangal, A / Santelj, L / Sartori, P / Sato, Y / Savinov, V / Scavino, B / Schueler, J / Schwanda, C / Seddon, R M / Seino, Y / Selce, A / Senyo, K / Sfienti, C / Shen, C P / Shiu, J-G / Shwartz, B / Sibidanov, A / Simon, F / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sumihama, M / Sumiyoshi, T / Summers, D J / Suzuki, S Y / Tabata, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Taniguchi, N / Taras, P / Tenchini, F / Torassa, E / Trabelsi, K / Tsuboyama, T / Uchida, M / Unger, K / Unno, Y / Uno, S / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vitale, L / Vossen, A / Wakai, M / Wakeling, H M / Wan Abdullah, W / Wang, C H / Wang, M-Z / Warburton, A / Watanabe, M / Webb, J / Wehle, S / Wessel, C / Wiechczynski, J / Windel, H / Won, E / Yabsley, B / Yamada, S / Yan, W / Yang, S B / Ye, H / Yin, J H / Yonenaga, M / Yuan, C Z / Yusa, Y / Zani, L / Zhang, Z / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I

Physical review letters

2020 Volume 124, Issue 14, Page(s) 141801

Abstract: Theories beyond the standard model often predict the existence of an additional neutral boson, the Z^{'}. Using data collected by the Belle II experiment during 2018 at the SuperKEKB collider, we perform the first searches for the invisible decay of a Z^{ ...

Abstract	Theories beyond the standard model often predict the existence of an additional neutral boson, the Z^{'}. Using data collected by the Belle II experiment during 2018 at the SuperKEKB collider, we perform the first searches for the invisible decay of a Z^{'} in the process e^{+}e^{-}→μ^{+}μ^{-}Z^{'} and of a lepton-flavor-violating Z^{'} in e^{+}e^{-}→e^{±}μ^{∓}Z^{'}. We do not find any excess of events and set 90% credibility level upper limits on the cross sections of these processes. We translate the former, in the framework of an L_{μ}-L_{τ} theory, into upper limits on the Z^{'} coupling constant at the level of 5×10^{-2}-1 for M_{Z^{'}}≤6 GeV/c^{2}.
Language	English
Publishing date	2020-04-27
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.124.141801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Measurement of the branching fractions of $B\to\eta' K$ decays using 2019/2020 Belle II data

Belle II Collaboration / Abudinén, F. / Adachi, I. / Adak, R. / Adamczyk, K. / Ahlburg, P. / Ahn, J. K. / Aihara, H. / Akopov, N. / Aloisio, A. / Ameli, F. / Andricek, L. / Ky, N. Anh / Asner, D. M. / Atmacan, H. / Aulchenko, V. / Aushev, T. / Aushev, V. / Aziz, T. /

Babu, V. / Bacher, S. / Baehr, S. / Bahinipati, S. / Bakich, A. M. / Bambade, P. / Banerjee, Sw. / Bansal, S. / Barrett, M. / Batignani, G. / Baudot, J. / Beaulieu, A. / Becker, J. / Behera, P. K. / Bender, M. / Bennett, J. V. / Bernieri, E. / Bernlochner, F. U. / Bertemes, M. / Bertholet, E. / Bessner, M. / Bettarini, S. / Bhardwaj, V. / Bhuyan, B. / Bianchi, F. / Bilka, T. / Bilokin, S. / Biswas, D. / Bobrov, A. / Bondar, A. / Bonvicini, G. / Bozek, A. / Bračko, M. / Branchini, P. / Braun, N. / Briere, R. A. / Browder, T. E. / Brown, D. N. / Budano, A. / Burmistrov, L. / Bussino, S. / Campajola, M. / Cao, L. / Caria, G. / Casarosa, G. / Cecchi, C. / Červenkov, D. / Chang, M. C. / Chang, P. / Cheaib, R. / Chekelian, V. / Chen, C. / Chen, Y. Q. / Chen, Y. T. / Cheon, B. G. / Chilikin, K. / Chirapatpimol, K. / Cho, H. E. / Cho, K. / Cho, S. J. / Choi, S. K. / Choudhury, S. / Cinabro, D. / Corona, L. / Cremaldi, L. M. / Cuesta, D. / Cunliffe, S. / Czank, T. / Dash, N. / Dattola, F. / De La Cruz-Burelo, E. / de Marino, G. / De Nardo, G. / De Nuccio, M. / De Pietro, G. / de Sangro, R. / Deschamps, B. / Destefanis, M. / Dey, S. / De Yta-Hernandez, A. / Di Canto, A. / Di Capua, F. / Di Carlo, S. / Dingfelder, J. / Doležal, Z. / Jiménez, I. Domínguez / Dong, T. V. / Dort, K. / Dossett, D. / Dubey, S. / Duell, S. / Dujany, G. / Eidelman, S. / Eliachevitch, M. / Epifanov, D. / Fast, J. E. / Ferber, T. / Ferlewicz, D. / Fillinger, T. / Finocchiaro, G. / Fiore, S. / Fioroni, V. / Fischer, P. / Fodor, A. / Forti, F. / Frey, A. / Friedl, M. / Fulsom, B. G. / Gabriel, M. / Gabyshev, N. / Ganiev, E. / Garcia-Hernandez, M. / Garg, R. / Garmash, A. / Gaur, V. / Gaz, A. / Gebauer, U. / Gelb, M. / Gellrich, A. / Gemmler, J. / Geßler, T. / Getzkow, D. / Giordano, R. / Giri, A. / Glazov, A. / Gobbo, B. / Godang, R. / Goldenzweig, P. / Golob, B. / Gomis, P. / Grace, P. / Gradl, W. / Graziani, E. / Greenwald, D. / Guan, Y. / Hadjivasiliou, C. / Halder, S. / Hara, K. / Hara, T. / Hartbrich, O. / Hayasaka, K. / Hayashii, H. / Hazra, S. / Hearty, C. / Hedges, M. T. / de la Cruz, I. Heredia / Villanueva, M. Hernández / Hershenhorn, A. / Higuchi, T. / Hill, E. C. / Hirata, H. / Hoek, M. / Hohmann, M. / Hollitt, S. / Hotta, T. / Hsu, C. L. / Hu, Y. / Huang, K. / Humair, T. / Iijima, T. / Inami, K. / Inguglia, G. / Jabbar, J. Irakkathil / Ishikawa, A. / Itoh, R. / Iwasaki, M. / Iwasaki, Y. / Iwata, S. / Jackson, P. / Jacobs, W. W. / Jaegle, I. / Jaffe, D. E. / Jang, E. J. / Jeandron, M. / Jeon, H. B. / Jia, S. / Jin, Y. / Joo, C. / Joo, K. K. / Junkerkalefeld, H. / Kadenko, I. / Kahn, J. / Kakuno, H. / Kaliyar, A. B. / Kandra, J. / Kang, K. H. / Kapusta, P. / Karl, R. / Karyan, G. / Kato, Y. / Kawai, H. / Kawasaki, T. / Keck, T. / Ketter, C. / Kichimi, H. / Kiesling, C. / Kim, B. H. / Kim, C. H. / Kim, D. Y. / Kim, H. J. / Kim, K. H. / Kim, K. / Kim, S. H. / Kim, Y. K. / Kim, Y. / Kimmel, T. D. / Kindo, H. / Kinoshita, K. / Kirby, B. / Kleinwort, C. / Knysh, B. / Kodyš, P. / Koga, T. / Kohani, S. / Komarov, I. / Konno, T. / Korpar, S. / Kovalchuk, N. / Kraetzschmar, T. M. G. / Krinner, F. / Križan, P. / Kroeger, R. / Krohn, J. F. / Krokovny, P. / Krüger, H. / Kuehn, W. / Kuhr, T. / Kumar, J. / Kumar, M. / Kumar, R. / Kumara, K. / Kumita, T. / Kunigo, T. / Künzel, M. / Kurz, S. / Kuzmin, A. / Kvasnička, P. / Kwon, Y. J. / Lacaprara, S. / Lai, Y. T. / La Licata, C. / Lalwani, K. / Lanceri, L. / Lange, J. S. / Lautenbach, K. / Laycock, P. J. / Diberder, F. R. Le / Lee, I. S. / Lee, S. C. / Leitl, P. / Levit, D. / Lewis, P. M. / Li, C. / Li, L. K. / Li, S. X. / Li, Y. B. / Libby, J. / Lieret, K. / Gioi, L. Li / Lin, J. / Liptak, Z. / Liu, Q. Y. / Liu, Z. A. / Liventsev, D. / Longo, S. / Loos, A. / Lu, P. / Lubej, M. / Lueck, T. / Luetticke, F. / Luo, T. / Lyu, C. / MacQueen, C. / Maeda, Y. / Maggiora, M. / Maity, S. / Manfredi, R. / Manoni, E. / Marcello, S. / Marinas, C. / Martini, A. / Masuda, M. / Matsuda, T. / Matsuoka, K. / Matvienko, D. / McNeil, J. / Meggendorfer, F. / Mei, J. C. / Meier, F. / Merola, M. / Metzner, F. / Milesi, M. / Miller, C. / Miyabayashi, K. / Miyake, H. / Miyata, H. / Mizuk, R. / Azmi, K. / Mohanty, G. B. / Moon, H. / Moon, T. / Grimaldo, J. A. Mora / Morii, T. / Moser, H. G. / Mrvar, M. / Mueller, F. / Müller, F. J. / Muller, Th. / Muroyama, G. / Murphy, C. / Mussa, R. / Nakagiri, K. / Nakamura, I. / Nakamura, K. R. / Nakano, E. / Nakao, M. / Nakayama, H. / Nakazawa, H. / Nanut, T. / Natkaniec, Z. / Natochii, A. / Nayak, M. / Nazaryan, G. / Neverov, D. / Niebuhr, C. / Niiyama, M. / Ninkovic, J. / Nisar, N. K. / Nishida, S. / Nishimura, K. / Nishimura, M. / Nouxman, M. H. A. / Oberhof, B. / Ogawa, K. / Ogawa, S. / Olsen, S. L. / Onishchuk, Y. / Ono, H. / Onuki, Y. / Oskin, P. / Oxford, E. R. / Ozaki, H. / Pakhlov, P. / Pakhlova, G. / Paladino, A. / Pang, T. / Panta, A. / Paoloni, E. / Pardi, S. / Park, H. / Park, S. H. / Paschen, B. / Passeri, A. / Pathak, A. / Patra, S. / Paul, S. / Pedlar, T. K. / Peruzzi, I. / Peschke, R. / Pestotnik, R. / Piccolo, M. / Piilonen, L. E. / Podesta-Lerma, P. L. M. / Polat, G. / Popov, V. / Praz, C. / Prell, S. / Prencipe, E. / Prim, M. T. / Purohit, M. V. / Rad, N. / Rados, P. / Raiz, S. / Rasheed, R. / Reif, M. / Reiter, S. / Remnev, M. / Resmi, P. K. / Ripp-Baudot, I. / Ritter, M. / Ritzert, M. / Rizzo, G. / Rizzuto, L. B. / Robertson, S. H. / Pérez, D. Rodríguez / Roney, J. M. / Rosenfeld, C. / Rostomyan, A. / Rout, N. / Rozanska, M. / Russo, G. / Sahoo, D. / Sakai, Y. / Sanders, D. A. / Sandilya, S. / Sangal, A. / Santelj, L. / Sartori, P. / Sasaki, J. / Sato, Y. / Savinov, V. / Scavino, B. / Schram, M. / Schreeck, H. / Schueler, J. / Schwanda, C. / Schwartz, A. J. / Schwenker, B. / Seddon, R. M. / Seino, Y. / Selce, A. / Senyo, K. / Seong, I. S. / Serrano, J. / Sevior, M. E. / Sfienti, C. / Shebalin, V. / Shen, C. P. / Shibuya, H. / Shiu, J. G. / Shwartz, B. / Sibidanov, A. / Simon, F. / Singh, J. B. / Skambraks, S. / Smith, K. / Sobie, R. J. / Soffer, A. / Sokolov, A. / Soloviev, Y. / Solovieva, E. / Spataro, S. / Spruck, B. / Starič, M. / Stefkova, S. / Stottler, Z. S. / Stroili, R. / Strube, J. / Stypula, J. / Sumihama, M. / Sumisawa, K. / Sumiyoshi, T. / Summers, D. J. / Sutcliffe, W. / Suzuki, K. / Suzuki, S. Y. / Svidras, H. / Tabata, M. / Takahashi, M. / Takizawa, M. / Tamponi, U. / Tanaka, S. / Tanida, K. / Tanigawa, H. / Taniguchi, N. / Tao, Y. / Taras, P. / Tenchini, F. / Tonelli, D. / Torassa, E. / Trabelsi, K. / Tsuboyama, T. / Tsuzuki, N. / Uchida, M. / Ueda, I. / Uehara, S. / Ueno, T. / Uglov, T. / Unger, K. / Unno, Y. / Uno, S. / Urquijo, P. / Ushiroda, Y. / Usov, Y. V. / Vahsen, S. E. / van Tonder, R. / Varner, G. S. / Varvell, K. E. / Vinokurova, A. / Vitale, L. / Vorobyev, V. / Vossen, A. / Wach, B. / Waheed, E. / Wakeling, H. M. / Wan, K. / Abdullah, W. Wan / Wang, B. / Wang, C. H. / Wang, M. Z. / Wang, X. L. / Warburton, A. / Watanabe, M. / Watanuki, S. / Webb, J. / Wehle, S. / Welsch, M. / Wessel, C. / Wiechczynski, J. / Wieduwilt, P. / Windel, H. / Won, E. / Wu, L. J. / Xu, X. P. / Yabsley, B. / Yamada, S. / Yan, W. / Yang, S. B. / Ye, H. / Yelton, J. / Yeo, I. / Yin, J. H. / Yonenaga, M. / Yook, Y. M. / Yoshihara, K. / Yoshinobu, T. / Yuan, C. Z. / Yuan, G. / Yusa, Y. / Zani, L. / Zhang, J. Z. / Zhang, Y. / Zhang, Z. / Zhilich, V. / Zhou, Q. D. / Zhou, X. Y. / Zhukova, V. I. / Zhulanov, V. / Zupanc, A.

2021

Abstract: This note describes the rediscovery of $B\to\eta' K$ decays in Belle II data, both in the charged and neutral final state: $B_0\to\eta' K_S$ and $B^\pm\to\eta' K^\pm$. The $\eta'$ is searched for in two decay modes: $\eta'\to\eta\pi^+\pi^-$ with $\eta\to\ ...

Abstract	This note describes the rediscovery of $B\to\eta' K$ decays in Belle II data, both in the charged and neutral final state: $B_0\to\eta' K_S$ and $B^\pm\to\eta' K^\pm$. The $\eta'$ is searched for in two decay modes: $\eta'\to\eta\pi^+\pi^-$ with $\eta\to\gamma\gamma$, and $\eta'\to\rho\gamma$. The analysis uses data collected in 2019 and 2020 at the SuperKEKB asymmetric $e^+e^-$ collider, with an integrated luminosity of $62.8~fb^{-1}$, corresponding to $68.2$ million of $B\bar{B}$ pairs produced. The signal yield is obtained via an unbinned maximum likelihood fit to signal sensitive variables, obtaining branching ratios: $$\mathcal{B}\left(B^\pm\to\eta'K^\pm\right) = \left(63.4~^{+3.4}_{-3.3}\,(stat)\,\pm3.2\,(syst)\,\right) \times10^{-6} $$ $$\mathcal{B}\left(B_0\to\eta'K_S\right) = \left(59.9~^{+5.8}_{-5.5}\,(stat)\,\pm2.9\,(syst)\,\right) \times10^{-6} $$ which are consistent with world average. Comment: 17 pages, 6 figures
Keywords	High Energy Physics - Experiment
Subject code	551
Publishing date	2021-04-13
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Online: Angular analysis of $B^+ \to \rho^+\rho^0$ decays reconstructed in 2019-2020 Belle II data

Belle II collaboration / Abudinén, F. / Adachi, I. / Adak, R. / Adamczyk, K. / Ahlburg, P. / Ahn, J. K. / Aihara, H. / Akopov, N. / Aloisio, A. / Ameli, F. / Andricek, L. / Ky, N. Anh / Asner, D. M. / Atmacan, H. / Aulchenko, V. / Aushev, T. / Aushev, V. / Aziz, T. /

Babu, V. / Bacher, S. / Baehr, S. / Bahinipati, S. / Bakich, A. M. / Bambade, P. / Banerjee, Sw. / Bansal, S. / Barrett, M. / Batignani, G. / Baudot, J. / Beaulieu, A. / Becker, J. / Behera, P. K. / Bender, M. / Bennett, J. V. / Bernieri, E. / Bernlochner, F. U. / Bertemes, M. / Bertholet, E. / Bessner, M. / Bettarini, S. / Bhardwaj, V. / Bhuyan, B. / Bianchi, F. / Bilka, T. / Bilokin, S. / Biswas, D. / Bobrov, A. / Bondar, A. / Bonvicini, G. / Bozek, A. / Brač, M. / Branchini, P. / Braun, N. / Briere, R. A. / Browder, T. E. / Brown, D. N. / Budano, A. / Burmistrov, L. / Bussino, S. / Campajola, M. / Cao, L. / Caria, G. / Casarosa, G. / Cecchi, C. / Č, D. / Chang, M. -C. / Chang, P. / Cheaib, R. / Chekelian, V. / Chen, C. / Chen, Y. Q. / Chen, Y. -T. / Cheon, B. G. / Chilikin, K. / Chirapatpimol, K. / Cho, H. -E. / Cho, K. / Cho, S. -J. / Choi, S. -K. / Choudhury, S. / Cinabro, D. / Corona, L. / Cremaldi, L. M. / Cuesta, D. / Cunliffe, S. / Czank, T. / Dash, N. / Dattola, F. / De La Cruz-Burelo, E. / de Marino, G. / De Nardo, G. / De Nuccio, M. / De Pietro, G. / de Sangro, R. / Deschamps, B. / Destefanis, M. / Dey, S. / De Yta-Hernandez, A. / Di Canto, A. / Di Capua, F. / Di Carlo, S. / Dingfelder, J. / Dolež, Z. / Domí, I. / Dong, T. V. / Dort, K. / Dossett, D. / Dubey, S. / Duell, S. / Dujany, G. / Eidelman, S. / Eliachevitch, M. / Epifanov, D. / Fast, J. E. / Ferber, T. / Ferlewicz, D. / Fillinger, T. / Finocchiaro, G. / Fiore, S. / Fischer, P. / Fodor, A. / Forti, F. / Frey, A. / Friedl, M. / Fulsom, B. G. / Gabriel, M. / Gabyshev, N. / Ganiev, E. / Garcia-Hernandez, M. / Garg, R. / Garmash, A. / Gaur, V. / Gaz, A. / Gebauer, U. / Gelb, M. / Gellrich, A. / Gemmler, J. / Geßler, T. / Getzkow, D. / Giordano, R. / Giri, A. / Glazov, A. / Gobbo, B. / Godang, R. / Goldenzweig, P. / Golob, B. / Gomis, P. / Grace, P. / Gradl, W. / Graziani, E. / Greenwald, D. / Guan, Y. / Gudkova, K. / Hadjivasiliou, C. / Halder, S. / Hara, K. / Hara, T. / Hartbrich, O. / Hayasaka, K. / Hayashii, H. / Hazra, S. / Hearty, C. / Hedges, M. T. / de la Cruz, I. Heredia / Herná, M. / Hershenhorn, A. / Higuchi, T. / Hill, E. C. / Hirata, H. / Hoek, M. / Hohmann, M. / Hollitt, S. / Hotta, T. / Hsu, C. -L. / Hu, Y. / Huang, K. / Humair, T. / Iijima, T. / Inami, K. / Inguglia, G. / Jabbar, J. Irakkathil / Ishikawa, A. / Itoh, R. / Iwasaki, M. / Iwasaki, Y. / Iwata, S. / Jackson, P. / Jacobs, W. W. / Jaegle, I. / Jaffe, D. E. / Jang, E. -J. / Jeandron, M. / Jeon, H. B. / Jia, S. / Jin, Y. / Joo, C. / Joo, K. K. / Junkerkalefeld, H. / Kadenko, I. / Kahn, J. / Kakuno, H. / Kaliyar, A. B. / Kandra, J. / Kang, K. H. / Kapusta, P. / Karl, R. / Karyan, G. / Kato, Y. / Kawai, H. / Kawasaki, T. / Keck, T. / Ketter, C. / Kichimi, H. / Kiesling, C. / Kim, B. H. / Kim, C. -H. / Kim, D. Y. / Kim, H. J. / Kim, K. -H. / Kim, K. / Kim, S. -H. / Kim, Y. -K. / Kim, Y. / Kimmel, T. D. / Kindo, H. / Kinoshita, K. / Kirby, B. / Kleinwort, C. / Knysh, B. / Kodyš, P. / Koga, T. / Kohani, S. / Komarov, I. / Konno, T. / Korobov, A. / Korpar, S. / Kovalchuk, N. / Kovalenko, E. / Kraetzschmar, T. M. G. / Krinner, F. / Križ, P. / Kroeger, R. / Krohn, J. F. / Krokovny, P. / Krüger, H. / Kuehn, W. / Kuhr, T. / Kumar, J. / Kumar, M. / Kumar, R. / Kumara, K. / Kumita, T. / Kunigo, T. / Kü, M. / Kurz, S. / Kuzmin, A. / Kvasnič, P. / Kwon, Y. -J. / Lacaprara, S. / Lai, Y. -T. / La Licata, C. / Lalwani, K. / Lanceri, L. / Lange, J. S. / Laurenza, M. / Lautenbach, K. / Laycock, P. J. / Diberder, F. R. Le / Lee, I. -S. / Lee, S. C. / Leitl, P. / Levit, D. / Lewis, P. M. / Li, C. / Li, L. K. / Li, S. X. / Li, Y. B. / Libby, J. / Lieret, K. / Gioi, L. Li / Lin, J. / Liptak, Z. / Liu, Q. Y. / Liu, Z. A. / Liventsev, D. / Longo, S. / Loos, A. / Lu, P. / Lubej, M. / Lueck, T. / Luetticke, F. / Luo, T. / Lyu, C. / MacQueen, C. / Maeda, Y. / Maggiora, M. / Maity, S. / Manfredi, R. / Manoni, E. / Marcello, S. / Marinas, C. / Martini, A. / Masuda, M. / Matsuda, T. / Matsuoka, K. / Matvienko, D. / McNeil, J. / Meggendorfer, F. / Mei, J. C. / Meier, F. / Merola, M. / Metzner, F. / Milesi, M. / Miller, C. / Miyabayashi, K. / Miyake, H. / Miyata, H. / Mizuk, R. / Azmi, K. / Mohanty, G. B. / Moon, H. / Moon, T. / Grimaldo, J. A. Mora / Morii, T. / Moser, H. -G. / Mrvar, M. / Mueller, F. / Mü, F. J. / Muller, Th. / Muroyama, G. / Murphy, C. / Mussa, R. / Nakagiri, K. / Nakamura, I. / Nakamura, K. R. / Nakano, E. / Nakao, M. / Nakayama, H. / Nakazawa, H. / Nanut, T. / Natkaniec, Z. / Natochii, A. / Nayak, M. / Nazaryan, G. / Neverov, D. / Niebuhr, C. / Niiyama, M. / Ninkovic, J. / Nisar, N. K. / Nishida, S. / Nishimura, K. / Nishimura, M. / Nouxman, M. H. A. / Oberhof, B. / Ogawa, K. / Ogawa, S. / Olsen, S. L. / Onishchuk, Y. / Ono, H. / Onuki, Y. / Oskin, P. / Oxford, E. R. / Ozaki, H. / Pakhlov, P. / Pakhlova, G. / Paladino, A. / Pang, T. / Panta, A. / Paoloni, E. / Pardi, S. / Park, H. / Park, S. -H. / Paschen, B. / Passeri, A. / Pathak, A. / Patra, S. / Paul, S. / Pedlar, T. K. / Peruzzi, I. / Peschke, R. / Pestotnik, R. / Piccolo, M. / Piilonen, L. E. / Podesta-Lerma, P. L. M. / Polat, G. / Popov, V. / Praz, C. / Prell, S. / Prencipe, E. / Prim, M. T. / Purohit, M. V. / Rad, N. / Rados, P. / Raiz, S. / Rasheed, R. / Reif, M. / Reiter, S. / Remnev, M. / Resmi, P. K. / Ripp-Baudot, I. / Ritter, M. / Ritzert, M. / Rizzo, G. / Rizzuto, L. B. / Robertson, S. H. / Rodrí, D. / Roney, J. M. / Rosenfeld, C. / Rostomyan, A. / Rout, N. / Rozanska, M. / Russo, G. / Sahoo, D. / Sakai, Y. / Sanders, D. A. / Sandilya, S. / Sangal, A. / Santelj, L. / Sartori, P. / Sasaki, J. / Sato, Y. / Savinov, V. / Scavino, B. / Schram, M. / Schreeck, H. / Schueler, J. / Schwanda, C. / Schwartz, A. J. / Schwenker, B. / Seddon, R. M. / Seino, Y. / Selce, A. / Senyo, K. / Seong, I. S. / Serrano, J. / Sevior, M. E. / Sfienti, C. / Shebalin, V. / Shen, C. P. / Shibuya, H. / Shiu, J. -G. / Shwartz, B. / Sibidanov, A. / Simon, F. / Singh, J. B. / Skambraks, S. / Smith, K. / Sobie, R. J. / Soffer, A. / Sokolov, A. / Soloviev, Y. / Solovieva, E. / Spataro, S. / Spruck, B. / Starič, M. / Stefkova, S. / Stottler, Z. S. / Stroili, R. / Strube, J. / Stypula, J. / Sumihama, M. / Sumisawa, K. / Sumiyoshi, T. / Summers, D. J. / Sutcliffe, W. / Suzuki, K. / Suzuki, S. Y. / Svidras, H. / Tabata, M. / Takahashi, M. / Takizawa, M. / Tamponi, U. / Tanaka, S. / Tanida, K. / Tanigawa, H. / Taniguchi, N. / Tao, Y. / Taras, P. / Tenchini, F. / Tonelli, D. / Torassa, E. / Trabelsi, K. / Tsuboyama, T. / Tsuzuki, N. / Uchida, M. / Ueda, I. / Uehara, S. / Ueno, T. / Uglov, T. / Unger, K. / Unno, Y. / Uno, S. / Urquijo, P. / Ushiroda, Y. / Usov, Y. V. / Vahsen, S. E. / van Tonder, R. / Varner, G. S. / Varvell, K. E. / Vinokurova, A. / Vitale, L. / Vorobyev, V. / Vossen, A. / Wach, B. / Waheed, E. / Wakeling, H. M. / Wan, K. / Abdullah, W. Wan / Wang, B. / Wang, C. H. / Wang, M. -Z. / Wang, X. L. / Warburton, A. / Watanabe, M. / Watanuki, S. / Webb, J. / Wehle, S. / Welsch, M. / Wessel, C. / Wiechczynski, J. / Wieduwilt, P. / Windel, H. / Won, E. / Wu, L. J. / Xu, X. P. / Yabsley, B. D. / Yamada, S. / Yan, W. / Yang, S. B. / Ye, H. / Yelton, J. / Yeo, I. / Yin, J. H. / Yonenaga, M. / Yook, Y. M. / Yoshihara, K. / Yoshinobu, T. / Yuan, C. Z. / Yuan, G. / Yusa, Y. / Zani, L. / Zhang, J. Z. / Zhang, Y. / Zhang, Z. / Zhilich, V. / Zhou, J. / Zhou, Q. D. / Zhou, X. Y. / Zhukova, V. I. / Zhulanov, V. / Zupanc, A.

2021

Abstract: We report on the first Belle II measurement of the branching fraction ($\mathcal{B}$) and longitudinal polarization fraction ($f_L$) of $B^+\to \rho^+\rho^0$ decays. We reconstruct $B^+\to \rho^+(\to \pi^+\pi^0(\to \gamma\gamma))\rho^0(\to \pi^+\pi^-)$ ... ...

Abstract	We report on the first Belle II measurement of the branching fraction ($\mathcal{B}$) and longitudinal polarization fraction ($f_L$) of $B^+\to \rho^+\rho^0$ decays. We reconstruct $B^+\to \rho^+(\to \pi^+\pi^0(\to \gamma\gamma))\rho^0(\to \pi^+\pi^-)$ decays in a sample of SuperKEKB electron-positron collisions collected by the Belle II experiment in 2019 and 2020 at the $\Upsilon$(4S) resonance and corresponding to $62.8$ fb$^{-1}$ of integrated luminosity. We fit the distributions of the difference between expected and observed $B$ candidate energy, continuum-suppression variable, dipion masses, and angular distributions of the resulting samples, to determine a signal yield of $104\pm16$ events. The signal yields are corrected for efficiencies determined from simulation and control data samples to obtain $\mathcal{B}(B^+ \to \rho^+\rho^0) = [20.6 \pm 3.2(\rm stat) \pm 4.0(\rm syst)]\times 10^{-6}$, and $f_L(B^+ \to \rho^+\rho^0) = 0.936 ^{+0.049}_{-0.041}(\rm stat)\pm 0.021(\rm syst)$. This first Belle II $B^+ \to \rho^+\rho^0$ angular analysis yields results compatible with previous determinations, and indicates Belle II performance superior to early Belle results.
Keywords	High Energy Physics - Experiment ; High Energy Physics - Phenomenology
Subject code	571
Publishing date	2021-09-23
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Online: Studies of the semileptonic $\bar B^0\to D^{*+}\ell^-\bar\nu_\ell$ and $B^-\to D^{0}\ell^-\bar\nu_\ell$ decay processes with 34.6 fb$^{-1}$ of Belle II data

Babu, V. / Bacher, S. / Baehr, S. / Bahinipati, S. / Bakich, A. M. / Bambade, P. / Banerjee, Sw. / Bansal, S. / Barrett, M. / Batignani, G. / Baudot, J. / Beaulieu, A. / Becker, J. / Behera, P. K. / Bender, M. / Bennett, J. V. / Bernieri, E. / Bernlochner, F. U. / Bertemes, M. / Bessner, M. / Bettarini, S. / Bhardwaj, V. / Bhuyan, B. / Bianchi, F. / Bilka, T. / Bilokin, S. / Biswas, D. / Bobrov, A. / Bondar, A. / Bonvicini, G. / Bozek, A. / Bračko, M. / Branchini, P. / Braun, N. / Briere, R. A. / Browder, T. E. / Brown, D. N. / Budano, A. / Burmistrov, L. / Bussino, S. / Calò, S. / Campajola, M. / Cao, L. / Caria, G. / Casarosa, G. / Cecchi, C. / Červenkov, D. / Chang, M. -C. / Chang, P. / Cheaib, R. / Chekelian, V. / Chen, C. / Chen, Y. Q. / Chen, Y. -T. / Cheon, B. G. / Chilikin, K. / Chirapatpimol, K. / Cho, H. -E. / Cho, K. / Cho, S. -J. / Choi, S. -K. / Choudhury, S. / Cinabro, D. / Corona, L. / Cremaldi, L. M. / Cuesta, D. / Cunliffe, S. / Czank, T. / Dash, N. / Dattola, F. / De La Cruz-Burelo, E. / De Nardo, G. / De Nuccio, M. / De Pietro, G. / de Sangro, R. / Deschamps, B. / Destefanis, M. / Dey, S. / De Yta-Hernandez, A. / Di Canto, A. / Di Capua, F. / Di Carlo, S. / Dingfelder, J. / Doležal, Z. / Jiménez, I. Domínguez / Dong, T. V. / Dort, K. / Dossett, D. / Dubey, S. / Duell, S. / Dujany, G. / Eidelman, S. / Eliachevitch, M. / Epifanov, D. / Fast, J. E. / Ferber, T. / Ferlewicz, D. / Finocchiaro, G. / Fiore, S. / Fischer, P. / Fodor, A. / Forti, F. / Frey, A. / Friedl, M. / Fulsom, B. G. / Gabriel, M. / Gabyshev, N. / Ganiev, E. / Garcia-Hernandez, M. / Garg, R. / Garmash, A. / Gaur, V. / Gaz, A. / Gebauer, U. / Gelb, M. / Gellrich, A. / Gemmler, J. / Geßler, T. / Getzkow, D. / Giordano, R. / Giri, A. / Glazov, A. / Gobbo, B. / Godang, R. / Goldenzweig, P. / Golob, B. / Gomis, P. / Grace, P. / Gradl, W. / Graziani, E. / Greenwald, D. / Guan, Y. / Hadjivasiliou, C. / Halder, S. / Hara, K. / Hara, T. / Hartbrich, O. / Hauth, T. / Hayasaka, K. / Hayashii, H. / Hearty, C. / Heck, M. / Hedges, M. T. / de la Cruz, I. Heredia / Villanueva, M. Hernández / Hershenhorn, A. / Higuchi, T. / Hill, E. C. / Hirata, H. / Hoek, M. / Hohmann, M. / Hollitt, S. / Hotta, T. / Hsu, C. -L. / Hu, Y. / Huang, K. / Iijima, T. / Inami, K. / Inguglia, G. / Jabbar, J. Irakkathil / Ishikawa, A. / Itoh, R. / Iwasaki, M. / Iwasaki, Y. / Iwata, S. / Jackson, P. / Jacobs, W. W. / Jaegle, I. / Jaffe, D. E. / Jang, E. -J. / Jeandron, M. / Jeon, H. B. / Jia, S. / Jin, Y. / Joo, C. / Joo, K. K. / Kadenko, I. / Kahn, J. / Kakuno, H. / Kaliyar, A. B. / Kandra, J. / Kang, K. H. / Kapusta, P. / Karl, R. / Karyan, G. / Kato, Y. / Kawai, H. / Kawasaki, T. / Keck, T. / Ketter, C. / Kichimi, H. / Kiesling, C. / Kim, B. H. / Kim, C. -H. / Kim, D. Y. / Kim, H. J. / Kim, J. B. / Kim, K. -H. / Kim, K. / Kim, S. -H. / Kim, Y. -K. / Kim, Y. / Kimmel, T. D. / Kindo, H. / Kinoshita, K. / Kirby, B. / Kleinwort, C. / Knysh, B. / Kodyš, P. / Koga, T. / Kohani, S. / Komarov, I. / Konno, T. / Korpar, S. / Kovalchuk, N. / Kraetzschmar, T. M. G. / Križan, P. / Kroeger, R. / Krohn, J. F. / Krokovny, P. / Krüger, H. / Kuehn, W. / Kuhr, T. / Kumar, J. / Kumar, M. / Kumar, R. / Kumara, K. / Kumita, T. / Kunigo, T. / Künzel, M. / Kurz, S. / Kuzmin, A. / Kvasnička, P. / Kwon, Y. -J. / Lacaprara, S. / Lai, Y. -T. / La Licata, C. / Lalwani, K. / Lanceri, L. / Lange, J. S. / Lautenbach, K. / Laycock, P. J. / Diberder, F. R. Le / Lee, I. -S. / Lee, S. C. / Leitl, P. / Levit, D. / Lewis, P. M. / Li, C. / Li, L. K. / Li, S. X. / Li, Y. M. / Li, Y. B. / Libby, J. / Lieret, K. / Gioi, L. Li / Lin, J. / Liptak, Z. / Liu, Q. Y. / Liu, Z. A. / Liventsev, D. / Longo, S. / Loos, A. / Lu, P. / Lubej, M. / Lueck, T. / Luetticke, F. / Luo, T. / Lyu, C. / MacQueen, C. / Maeda, Y. / Maggiora, M. / Maity, S. / Manfredi, R. / Manoni, E. / Marcello, S. / Marinas, C. / Martini, A. / Masuda, M. / Matsuda, T. / Matsuoka, K. / Matvienko, D. / McNeil, J. / Meggendorfer, F. / Mei, J. C. / Meier, F. / Merola, M. / Metzner, F. / Milesi, M. / Miller, C. / Miyabayashi, K. / Miyake, H. / Miyata, H. / Mizuk, R. / Azmi, K. / Mohanty, G. B. / Moon, H. / Moon, T. / Grimaldo, J. A. Mora / Morda, A. / Morii, T. / Moser, H. -G. / Mrvar, M. / Mueller, F. / Müller, F. J. / Muller, Th. / Muroyama, G. / Murphy, C. / Mussa, R. / Nakagiri, K. / Nakamura, I. / Nakamura, K. R. / Nakano, E. / Nakao, M. / Nakayama, H. / Nakazawa, H. / Nanut, T. / Natkaniec, Z. / Natochii, A. / Nayak, M. / Nazaryan, G. / Neverov, D. / Niebuhr, C. / Niiyama, M. / Ninkovic, J. / Nisar, N. K. / Nishida, S. / Nishimura, K. / Nishimura, M. / Nouxman, M. H. A. / Oberhof, B. / Ogawa, K. / Ogawa, S. / Olsen, S. L. / Onishchuk, Y. / Ono, H. / Onuki, Y. / Oskin, P. / Oxford, E. R. / Ozaki, H. / Pakhlov, P. / Pakhlova, G. / Paladino, A. / Pang, T. / Panta, A. / Paoloni, E. / Pardi, S. / Park, C. / Park, H. / Park, S. -H. / Paschen, B. / Passeri, A. / Pathak, A. / Patra, S. / Paul, S. / Pedlar, T. K. / Peruzzi, I. / Peschke, R. / Pestotnik, R. / Piccolo, M. / Piilonen, L. E. / Podesta-Lerma, P. L. M. / Polat, G. / Popov, V. / Praz, C. / Prencipe, E. / Prim, M. T. / Purohit, M. V. / Rad, N. / Rados, P. / Rasheed, R. / Reif, M. / Reiter, S. / Remnev, M. / Resmi, P. K. / Ripp-Baudot, I. / Ritter, M. / Ritzert, M. / Rizzo, G. / Rizzuto, L. B. / Robertson, S. H. / Pérez, D. Rodríguez / Roney, J. M. / Rosenfeld, C. / Rostomyan, A. / Rout, N. / Rozanska, M. / Russo, G. / Sahoo, D. / Sakai, Y. / Sanders, D. A. / Sandilya, S. / Sangal, A. / Santelj, L. / Sartori, P. / Sasaki, J. / Sato, Y. / Savinov, V. / Scavino, B. / Schram, M. / Schreeck, H. / Schueler, J. / Schwanda, C. / Schwartz, A. J. / Schwenker, B. / Seddon, R. M. / Seino, Y. / Selce, A. / Senyo, K. / Seong, I. S. / Serrano, J. / Sevior, M. E. / Sfienti, C. / Shebalin, V. / Shen, C. P. / Shibuya, H. / Shiu, J. -G. / Shwartz, B. / Sibidanov, A. / Simon, F. / Singh, J. B. / Skambraks, S. / Smith, K. / Sobie, R. J. / Soffer, A. / Sokolov, A. / Soloviev, Y. / Solovieva, E. / Spataro, S. / Spruck, B. / Starič, M. / Stefkova, S. / Stottler, Z. S. / Stroili, R. / Strube, J. / Stypula, J. / Sumihama, M. / Sumisawa, K. / Sumiyoshi, T. / Summers, D. J. / Sutcliffe, W. / Suzuki, K. / Suzuki, S. Y. / Svidras, H. / Tabata, M. / Takahashi, M. / Takizawa, M. / Tamponi, U. / Tanaka, S. / Tanida, K. / Tanigawa, H. / Taniguchi, N. / Tao, Y. / Taras, P. / Tenchini, F. / Tonelli, D. / Torassa, E. / Trabelsi, K. / Tsuboyama, T. / Tsuzuki, N. / Uchida, M. / Ueda, I. / Uehara, S. / Ueno, T. / Uglov, T. / Unger, K. / Unno, Y. / Uno, S. / Urquijo, P. / Ushiroda, Y. / Usov, Y. / Vahsen, S. E. / van Tonder, R. / Varner, G. S. / Varvell, K. E. / Vinokurova, A. / Vitale, L. / Vorobyev, V. / Vossen, A. / Waheed, E. / Wakeling, H. M. / Wan, K. / Abdullah, W. Wan / Wang, B. / Wang, C. H. / Wang, M. -Z. / Wang, X. L. / Warburton, A. / Watanabe, M. / Watanuki, S. / Watson, I. / Webb, J. / Wehle, S. / Welsch, M. / Wessel, C. / Wiechczynski, J. / Wieduwilt, P. / Windel, H. / Won, E. / Wu, L. J. / Xu, X. P. / Yabsley, B. / Yamada, S. / Yan, W. / Yang, S. B. / Ye, H. / Yelton, J. / Yeo, I. / Yin, J. H. / Yonenaga, M. / Yook, Y. M. / Yoshinobu, T. / Yuan, C. Z. / Yuan, G. / Yuan, W. / Yusa, Y. / Zani, L. / Zhang, J. Z. / Zhang, Y. / Zhang, Z. / Zhilich, V. / Zhou, Q. D. / Zhou, X. Y. / Zhukova, V. I. / Zhulanov, V. / Zupanc, A.

2020

Abstract: We report measurements of the $\bar{B}^0 \to D^{*+} \ell^{-} \bar{\nu}_l$ and $B^- \to D^{0} \ell^{-} \bar{\nu}_l$ processes using 34.6 fb$^{-1}$ of collision events recorded by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ ... ...

Abstract	We report measurements of the $\bar{B}^0 \to D^{+} \ell^{-} \bar{\nu}_l$ and $B^- \to D^{0} \ell^{-} \bar{\nu}_l$ processes using 34.6 fb$^{-1}$ of collision events recorded by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. For the $B^-\to D^{0}\ell^-\bar\nu_\ell$ channel, we present first studies that isolate this decay from other semileptonic processes and backgrounds. We report a measurement of the $\bar{B}^0 \to D^{+} \ell^{-} \bar{\nu}_l$ branching fraction and obtain ${\cal B}(\bar{B}^0 \to D^{+} \ell^{-} \bar{\nu}_l) = \left(4.60 \pm 0.05_{\mathrm{stat}}\pm0.17_{\mathrm{syst}} \pm 0.45_{\pi_s}\right) \%$, in agreement with the world average. Here, the uncertainties are statistical, systematic, and related to slow pion reconstruction, respectively. The systematic uncertainties are limited by the statistics of auxiliary measurements and will improve in the future. We also report differential branching fractions in five bins of the hadronic recoil parameter $w$ for $\bar{B}^0 \to D^{+} \ell^{-} \bar{\nu}_l$, unfolded to account for resolution and efficiency effects. Comment: 19 pages, 6 figures
Keywords	High Energy Physics - Experiment
Subject code	660
Publishing date	2020-08-17
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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