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Article ; Online: Search for Lepton-Flavor-Violating τ Decays to a Lepton and an Invisible Boson at Belle II.

Adachi, I / Adamczyk, K / Aggarwal, L / Ahmed, H / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Aushev, T / Aushev, V / Bae, H / Bahinipati, S / Bambade, P / Banerjee, Sw / Baudot, J / Bauer, M / Baur, A / Beaubien, A /

Becker, J / Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhuyan, B / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bodrov, D / Bolz, A / Borah, J / Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Chang, M-C / Chang, P / Cheaib, R / Cheema, P / Chekelian, V / Chen, Y Q / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cinabro, D / Corona, L / Cunliffe, S / Das, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Dhamija, R / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dreyer, S / Dubey, S / Dujany, G / Ecker, P / Eliachevitch, M / Epifanov, D / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finck, C / Finocchiaro, G / Flood, K / Fodor, A / Forti, F / Fulsom, B G / Gabrielli, A / Ganiev, E / Garcia-Hernandez, M / Gaur, V / Gaz, A / Gellrich, A / Ghevondyan, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Gradl, W / Granderath, S / Graziani, E / Greenwald, D / Gruberová, Z / Gu, T / Gudkova, K / Guilliams, J / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hohmann, M / Hsu, C-L / Humair, T / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jackson, P / Jacobs, W W / Jaffe, D E / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Joo, K K / Junkerkalefeld, H / Kakuno, H / Kaliyar, A B / Kandra, J / Kang, K H / Kang, S / Karl, R / Karyan, G / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kinoshita, K / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, R / Kumara, K / Kunigo, T / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Lautenbach, K / Leboucher, R / Le Diberder, F R / Leitl, P / Lewis, P M / Li, C / Li, L K / Li, Y B / Libby, J / Lieret, K / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Lozar, A / Lueck, T / Luo, T / Lyu, C / Maggiora, M / Maiti, R / Maity, S / Manfredi, R / Manoni, E / Manthei, A / Marcello, S / Marinas, C / Martel, L / Martini, A / Martinov, T / Massaccesi, L / Masuda, M / Matsuda, T / Matsuoka, K / Matvienko, D / Maurya, S K / McKenna, J A / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Mizuk, R / Mohanty, G B / Molina-Gonzalez, N / Moneta, S / Moser, H-G / Mrvar, M / Mussa, R / Nakamura, I / Nakamura, K R / Nakao, M / Nakayama, H / Nakazawa, Y / Narimani Charan, A / Naruki, M / Natochii, A / Nayak, L / Nayak, M / Nazaryan, G / Niebuhr, C / Nisar, N K / Nishida, S / Ogawa, S / Ono, H / Onuki, Y / Oskin, P / Pakhlov, P / Pakhlova, G / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Parham, K / Park, H / Park, S-H / Paschen, B / Passeri, 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, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raeuber, G / Raiz, S / Ramirez Morales, A / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Robertson, S H / Rodríguez Pérez, D / Roney, J M / Rostomyan, A / Rout, N / Russo, G / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schueler, J / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shen, C P / Shi, X D / Shillington, T / Shiu, J-G / Shwartz, B / Sibidanov, A / Simon, F / Singh, J B / Skorupa, J / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sue, Y / Sumihama, M / Sumisawa, K / Sutcliffe, W / Suzuki, S Y / Svidras, H / Takizawa, M / Tamponi, U / Tanida, K / Tanigawa, H / Tenchini, F / Thaller, A / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Uchida, M / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vitale, L / Vobbilisetti, V / Wakeling, H M / Wang, E / Wang, M-Z / Wang, X L / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Wiechczynski, J / 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 / Zhang, Y / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 130, Issue 18, Page(s) 181803

Abstract: We search for lepton-flavor-violating τ^{-}→e^{-}α and τ^{-}→μ^{-}α decays, where α is an invisible spin-0 boson. The search uses electron-positron collisions at 10.58 GeV center-of-mass energy with an integrated luminosity of 62.8 fb^{-1}, produced by ... ...

Abstract	We search for lepton-flavor-violating τ^{-}→e^{-}α and τ^{-}→μ^{-}α decays, where α is an invisible spin-0 boson. The search uses electron-positron collisions at 10.58 GeV center-of-mass energy with an integrated luminosity of 62.8 fb^{-1}, produced by the SuperKEKB collider and collected with the Belle II detector. We search for an excess in the lepton-energy spectrum of the known τ^{-}→e^{-}ν[over ¯]_{e}ν_{τ} and τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} decays. We report 95% confidence-level upper limits on the branching-fraction ratio B(τ^{-}→e^{-}α)/B(τ^{-}→e^{-}ν[over ¯]_{e}ν_{τ}) in the range (1.1-9.7)×10^{-3} and on B(τ^{-}→μ^{-}α)/B(τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ}) in the range (0.7-12.2)×10^{-3} for α masses between 0 and 1.6 GeV/c^{2}. These results provide the most stringent bounds on invisible boson production from τ decays.
Language	English
Publishing date	2023-03-03
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.130.181803
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Test of Light-Lepton Universality in the Rates of Inclusive Semileptonic B-Meson Decays at Belle II.

Aggarwal, L / Ahmed, H / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, T / Aushev, V / Bae, H / Bahinipati, S / Bambade, P / Banerjee, Sw / Bansal, S / Barrett, M / Baudot, J / Bauer, M / Baur, A /

Beaubien, A / Becker, J / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhardwaj, V / Bhuyan, B / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bodrov, D / Borah, J / Bozek, A / Bračko, M / Briere, R A / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Cerasoli, J / Chang, M-C / Cheaib, R / Cheema, P / Chekelian, V / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cochran, J / Corona, L / Cunliffe, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dhamija, R / Di Capua, F / Dingfelder, J / Doležal, Z / Dong, T V / Dorigo, M / Dossett, D / Dreyer, S / Dubey, S / Dujany, G / Ecker, P / Eliachevitch, M / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finocchiaro, G / Fodor, A / Forti, F / Frey, A / Fulsom, B G / Gabrielli, A / Ganiev, E / Garcia-Hernandez, M / Gaudino, G / Gaur, V / Gaz, A / Gellrich, A / Ghevondyan, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Gradl, W / Grammatico, T / Granderath, S / Graziani, E / Gruberová, Z / Gu, T / Gudkova, K / Halder, S / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Hedges, M T / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hohmann, M / Hsu, C-L / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jacobs, W W / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Junkerkalefeld, H / Kaleta, M / Kaliyar, A B / Karyan, G / Kawasaki, T / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kinoshita, K / Kodyš, P / Kohani, S / Kojima, K / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Križan, P / Krokovny, P / Kumar, J / Kumar, R / Kumara, K / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lange, J S / Laurenza, M / Leboucher, R / Le Diberder, F R / Levit, D / Lewis, P M / Li, L K / Libby, J / Liptak, Z / Liu, Q Y / Liu, Z Q / Liventsev, D / Longo, S / Lueck, T / Lyu, C / Ma, Y / Maggiora, M / Maharana, S P / Maiti, R / Maity, S / Manfredi, R / Manoni, E / Manthei, A C / Mantovano, M / Marinas, C / Martel, L / Martellini, C / Martini, A / Massaccesi, L / Masuda, M / Matsuoka, K / Matvienko, D / Maurya, S K / McKenna, J A / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Mizuk, R / Mohanty, G B / Moneta, S / Mrvar, M / Mussa, R / Nakamura, I / Nakamura, K R / Nakao, M / Nakazawa, Y / Narimani Charan, A / Naruki, M / Narwal, D / Natochii, A / Nayak, L / Nazaryan, G / Nisar, N K / Nishida, S / Ono, H / Onuki, Y / Oskin, P / Pakhlov, P / Pakhlova, G / Paladino, A / Panta, A / Pardi, S / Park, H / Park, J / Paschen, B / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Piilonen, L E / Pinna Angioni, G / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raeuber, G / Reif, M / Reiter, S / Ripp-Baudot, I / Rizzo, G / Rizzuto, L B / Rocchetti, P / Roney, J M / Rostomyan, A / Rout, N / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Scavino, B / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Sevior, M E / Sfienti, C / Shan, W / Sharma, C / Shen, C P / Shillington, T / Shiu, J-G / Simon, F / Singh, J B / Skorupa, J / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stroili, R / Sue, Y / Sumihama, M / Sutcliffe, W / Suzuki, S Y / Svidras, H / Takizawa, M / Tamponi, U / Tanida, K / Taniguchi, N / Tenchini, F / Tiwary, R / Tonelli, D / Torassa, E / Trabelsi, K / Tsaklidis, I / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vismaya, V S / Vitale, L / Vossen, A / Wallner, S / Wang, E / Wang, M-Z / Wang, X L / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Won, E / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Ye, H / Yin, J H / Yook, Y M / Yoshihara, K / Zhai, Y / Zhang, Y / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 131, Issue 5, Page(s) 51804

Abstract: We present the first measurement of the ratio of branching fractions of inclusive semileptonic B-meson decays, R(X_{e/μ})=B(B→Xeν)/B(B→Xμν), a precision test of electron-muon universality, using data corresponding to 189 fb^{-1} from electron-positron ... ...

Abstract	We present the first measurement of the ratio of branching fractions of inclusive semileptonic B-meson decays, R(X_{e/μ})=B(B→Xeν)/B(B→Xμν), a precision test of electron-muon universality, using data corresponding to 189 fb^{-1} from electron-positron collisions collected with the Belle II detector. In events where the partner B meson is fully reconstructed, we use fits to the lepton momentum spectra above 1.3 GeV/c to obtain R(X_{e/μ})=1.007±0.009(stat)±0.019(syst), which is the most precise lepton-universality test of its kind and agrees with the standard-model expectation.
Language	English
Publishing date	2023-08-18
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.131.051804
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Observation of e^{+}e^{-}→ωχ_{bJ}(1P) and Search for X_{b}→ωϒ(1S) at sqrt[s] near 10.75 GeV.

Adachi, I / Aggarwal, L / Ahmed, H / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Aushev, T / Aushev, V / Bae, H / Bambade, P / Banerjee, Sw / Baudot, J / Bauer, M / Beaubien, A / Becker, J / Behera, P K / Bennett, J V /

Bernieri, E / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhuyan, B / Bianchi, F / Bilka, T / Biswas, D / Bodrov, D / Bolz, A / Borah, J / Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Chang, M-C / Cheema, P / Chekelian, V / Chen, Y Q / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cinabro, D / Corona, L / Cunliffe, S / Das, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Dhamija, R / Di Canto, A / Di Capua, F / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dreyer, S / Dubey, S / Dujany, G / Eliachevitch, M / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finocchiaro, G / Fodor, A / Forti, F / Fulsom, B G / Ganiev, E / Gaur, V / Gaz, A / Gellrich, A / Ghevondyan, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Granderath, S / Graziani, E / Greenwald, D / Gu, T / Guan, Y / Gudkova, K / Guilliams, J / Hara, T / 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 / Hohmann, M / Hsu, C-L / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Iwasaki, M / Jackson, P / Jacobs, W W / Jaffe, D E / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Joo, K K / Junkerkalefeld, H / Kaliyar, A B / Kang, K H / Karl, R / Karyan, G / Ketter, C / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kumar, R / Kumara, K / Kunigo, T / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Lautenbach, K / Leboucher, R / Lewis, P M / Li, C / Li, L K / Libby, J / Lieret, K / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Lozar, A / Lueck, T / Lyu, C / Maggiora, M / Maiti, R / Manfredi, R / Manoni, E / Marcello, S / Marinas, C / Martel, L / Martini, A / Martinov, T / Massaccesi, L / Masuda, M / Matsuoka, K / Maurya, S K / McKenna, J A / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Mizuk, R / Molina-Gonzalez, N / Moneta, S / Moser, H-G / Mrvar, M / Mussa, R / Nakamura, I / Nakao, M / Nakazawa, Y / Narimani Charan, A / Naruki, M / Natkaniec, Z / Natochii, A / Nayak, L / Nayak, M / Nazaryan, G / Nisar, N K / Ogawa, S / Ono, H / Onuki, Y / Oskin, P / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Park, H / Park, S-H / Paschen, B / Passeri, A / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Piccolo, M / Piilonen, L E / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Raiz, S / Ramirez Morales, A / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Robertson, S H / Roney, J M / Rostomyan, A / Rout, N / Russo, G / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schueler, J / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shen, C P / Shi, X D / Shillington, T / Sibidanov, A / Singh, J B / Skorupa, J / Sobie, R J / Soffer, A / Solovieva, E / Spataro, S / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Sue, Y / Sumihama, M / Sumisawa, K / Sutcliffe, W / Suzuki, S Y / Svidras, H / Takizawa, M / Tanida, K / Tanigawa, H / Tenchini, F / Thaller, A / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Uchida, M / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Vinokurova, A / Vitale, L / Vobbilisetti, V / Wakeling, H M / Wang, E / Wang, M-Z / Warburton, A / Watanuki, S / Welsch, M / Wessel, C / Won, E / 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 / Zani, L / Zhang, Y / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 130, Issue 9, Page(s) 91902

Abstract: We study the processes e^{+}e^{-}→ωχ_{bJ}(1P) (J=0, 1, or 2) using samples at center-of-mass energies sqrt[s]=10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb^{-1} of integrated luminosity, respectively. These data were collected ... ...

Abstract	We study the processes e^{+}e^{-}→ωχ_{bJ}(1P) (J=0, 1, or 2) using samples at center-of-mass energies sqrt[s]=10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb^{-1} of integrated luminosity, respectively. These data were collected with the Belle II detector during special operations of the SuperKEKB collider above the ϒ(4S) resonance. We report the first observation of ωχ_{bJ}(1P) signals at sqrt[s]=10.745 GeV. By combining Belle II data with Belle results at sqrt[s]=10.867 GeV, we find energy dependencies of the Born cross sections for e^{+}e^{-}→ωχ_{b1,b2}(1P) to be consistent with the shape of the ϒ(10753) state. These data indicate that the internal structures of the ϒ(10753) and ϒ(10860) states may differ. Including data at sqrt[s]=10.653 GeV, we also search for the bottomonium equivalent of the X(3872) state decaying into ωϒ(1S). No significant signal is observed for masses between 10.45 and 10.65 GeV/c^{2}.
Language	English
Publishing date	2023-02-24
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.130.091902
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Tests of Light-Lepton Universality in Angular Asymmetries of B^{0}→D^{*-}ℓν Decays.

Adachi, I / Adamczyk, K / Aggarwal, L / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, T / Aushev, V / Aversano, M / Babu, V / Bae, H / Bahinipati, S / Bambade, P / Banerjee, Sw / Barrett, M / Baudot, J /

Bauer, M / Baur, A / Beaubien, A / Becherer, F / Becker, J / Behera, P K / Bennett, J V / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhuyan, B / Bianchi, F / Bilka, T / Biswas, D / Bobrov, A / Bodrov, D / Bolz, A / Bondar, A / Borah, J / Bozek, A / Bračko, M / Branchini, P / Briere, R A / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Cerasoli, J / Chang, M-C / Chang, P / Cheaib, R / Cheema, P / Chekelian, V / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Choi, S-K / Choudhury, S / Cochran, J / Corona, L / Cremaldi, L M / Das, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / Dhamija, R / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dreyer, S / Dubey, S / Dujany, G / Ecker, P / Eliachevitch, M / Epifanov, D / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finck, C / Finocchiaro, G / Fodor, A / Forti, F / Frey, A / Fulsom, B G / Gabrielli, A / Ganiev, E / Garcia-Hernandez, M / Garg, R / Garmash, A / Gaudino, G / Gaur, V / Gaz, A / Gellrich, A / Ghevondyan, G / Ghosh, D / Ghumaryan, H / Giakoustidis, G / Giordano, R / Giri, A / Gobbo, B / Godang, R / Gogota, O / Goldenzweig, P / Gradl, W / Granderath, S / Graziani, E / Greenwald, D / Gruberová, Z / Gu, T / Guan, Y / Gudkova, K / Halder, S / Han, Y / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Hedges, M T / Heidelbach, A / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hoek, M / Hohmann, M / Horak, P / Hsu, C-L / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jackson, P / Jacobs, W W / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Johnson, A / Junkerkalefeld, H / Kaliyar, A B / Kandra, J / Kang, K H / Karyan, G / Kawasaki, T / Keil, F / Ketter, C / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kinoshita, K / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, M / Kumara, K / Kunigo, T / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lai, Y-T / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Leboucher, R / Le Diberder, F R / Leitl, P / Levit, D / Lewis, P M / Li, C / Li, L K / Li, Y / Libby, J / Liu, Q Y / Liu, Z Q / Liventsev, D / Longo, S / Lueck, T / Luo, T / Lyu, C / Ma, Y / Maggiora, M / Maharana, S P / Maiti, R / Maity, S / Mancinelli, G / Manfredi, R / Manoni, E / Manthei, A C / Mantovano, M / Marcantonio, D / Marcello, S / Marinas, C / Martel, L / Martellini, C / Martini, A / Martinov, T / Massaccesi, L / Masuda, M / Matsuda, T / Matvienko, D / Maurya, S K / McKenna, J A / Mehta, R / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Mirra, M / Miyabayashi, K / Mohanty, G B / Molina-Gonzalez, N / Mondal, S / Moneta, S / Moser, H-G / Mrvar, M / Mussa, R / Nakamura, I / Nakazawa, Y / Narimani Charan, A / Naruki, M / Natkaniec, Z / Natochii, A / Nayak, L / Nazaryan, G / Nisar, N K / Nishida, S / Ogawa, S / Ono, H / Oskin, P / Otani, F / Pakhlov, P / Pakhlova, G / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Parham, K / Park, S-H / Paschen, B / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Pham, F / Piccolo, M / Piilonen, L E / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raeuber, G / Raiz, S / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Robertson, S H / Roehrken, M / Roney, J M / Rostomyan, A / Rout, N / Russo, G / Sahoo, D / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schmitt, C / Schnepf, M / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shan, W / Sharma, C / Shen, C P / Shi, X D / Shillington, T / Shiu, J-G / Shtol, D / Shwartz, B / Sibidanov, A / Simon, F / Singh, J B / Skorupa, J / Sobie, R J / Sobotzik, M / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stavroulakis, P / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sumihama, M / Sumisawa, K / Sutcliffe, W / Svidras, H / Takahashi, M / Takizawa, M / Tamponi, U / Tanida, K / Tenchini, F / Thaller, A / Tittel, O / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Tsaklidis, I / Uchida, M / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Veronesi, M / Vismaya, V S / Vitale, L / Vobbilisetti, V / Volpe, R / Wach, B / Waheed, E / Wakai, M / Wallner, S / Wang, E / Wang, M-Z / Wang, Z / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Yin, J H / Yoshihara, K / Yuan, C Z / Zani, L / Zhang, Y / Zhilich, V / Zhou, J S / Zhou, Q D / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 131, Issue 18, Page(s) 181801

Abstract: We present the first comprehensive tests of the universality of the light leptons in the angular distributions of semileptonic B^{0}-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry observables as functions of the decay ... ...

Abstract	We present the first comprehensive tests of the universality of the light leptons in the angular distributions of semileptonic B^{0}-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry observables as functions of the decay recoil that are sensitive to lepton-universality-violating contributions. We use events where one neutral B is fully reconstructed in ϒ(4S)→BB[over ¯] decays in data corresponding to 189 fb^{-1} integrated luminosity from electron-positron collisions collected with the Belle II detector. We find no significant deviation from the standard model expectations.
Language	English
Publishing date	2023-11-17
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.131.181801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Measurement of CP Violation in B^{0}→K_{S}^{0}π^{0} Decays at Belle II.

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

Baudot, J / Bauer, M / Baur, A / Beaubien, A / Becker, J / Behera, P K / Bennett, J V / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhuyan, B / Bianchi, F / Bilka, T / Biswas, D / Bodrov, D / Bondar, A / Borah, J / Bozek, A / Bračko, M / Branchini, P / Briere, R A / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Cerasoli, J / Chang, P / Cheaib, R / Cheema, P / Chekelian, V / Chen, C / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cochran, J / Corona, L / Cremaldi, L M / Das, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / de Marino, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / De Yta-Hernandez, A / Dhamija, R / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dreyer, S / Dubey, S / Dujany, G / Ecker, P / Eliachevitch, M / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finck, C / Finocchiaro, G / Fodor, A / Forti, F / Fulsom, B G / Gabrielli, A / Ganiev, E / Garcia-Hernandez, M / Garg, R / Garmash, A / Gaudino, G / Gaur, V / Gaz, A / Gellrich, A / Ghosh, D / Giakoustidis, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Gradl, W / Grammatico, T / Granderath, S / Graziani, E / Greenwald, D / Gruberová, Z / Gu, T / Guan, Y / Gudkova, K / Halder, S / Han, Y / Hara, K / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Hedges, M T / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hoek, M / Hohmann, M / Hsu, C-L / Humair, T / Iijima, T / Inami, K / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jackson, P / Jacobs, W W / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Johnson, A / Joo, K K / Junkerkalefeld, H / Kaleta, M / Kaliyar, A B / Kandra, J / Kang, K H / Kang, S / Kar, S / Karyan, G / Kawasaki, T / Keil, F / Ketter, C / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, M / Kumara, K / Kunigo, T / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lai, Y-T / Lam, T / Lange, J S / Laurenza, M / Leboucher, R / Le Diberder, F R / Leitl, P / Levit, D / Li, C / Li, L K / Libby, J / Liu, Q Y / Liu, Z Q / Liventsev, D / Longo, S / Lueck, T / Luo, T / Lyu, C / Ma, Y / Maggiora, M / Maharana, S P / Maiti, R / Maity, S / Mancinelli, G / Manfredi, R / Manoni, E / Mantovano, M / Marcantonio, D / Marcello, S / Marinas, C / Martel, L / Martellini, C / Martinov, T / Massaccesi, L / Masuda, M / Matsuda, T / Matsuoka, K / Matvienko, D / Maurya, S K / McKenna, J A / Mehta, R / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Mirra, M / Miyabayashi, K / Mizuk, R / Mohanty, G B / Molina-Gonzalez, N / Mondal, S / Moneta, S / Moser, H-G / Mrvar, M / Mussa, R / Nakamura, I / Nakazawa, Y / Narimani Charan, A / Naruki, M / Natochii, A / Nayak, L / Nayak, M / Nazaryan, G / Nisar, N K / Nishida, S / Ono, H / Onuki, Y / Oskin, P / Pakhlov, P / Pakhlova, G / Paladino, A / Paoloni, E / Pardi, S / Parham, K / Park, H / Park, S-H / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Peschke, R / Pestotnik, R / Pham, F / Piccolo, M / Piilonen, L E / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raeuber, G / Raiz, S / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Robertson, S H / Roehrken, M / Roney, J M / Rostomyan, A / Rout, N / Russo, G / Sahoo, D / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schmitt, C / Schwanda, C / Schwartz, A J / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shan, W / Sharma, C / Shi, X D / Shillington, T / Shiu, J-G / Shtol, D / Sibidanov, A / Simon, F / Singh, J B / Skorupa, J / Sobie, R J / Sobotzik, M / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stavroulakis, P / Stefkova, S / Stottler, Z S / Stroili, R / Sumihama, M / Sumisawa, K / Sutcliffe, W / Svidras, H / Takahashi, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Tenchini, F / Thaller, A / Tittel, O / Tiwary, R / Tonelli, D / Torassa, E / Trabelsi, K / Tsaklidis, I / Uchida, M / Ueda, I / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vismaya, V S / Vitale, L / Wach, B / Wakai, M / Wakeling, H M / Wallner, S / Wang, E / Wang, M-Z / Wang, Z / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Won, E / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Yin, J H / Yoshihara, K / Yuan, C Z / Yusa, Y / Zani, L / Zhang, Y / Zhilich, V / Zhou, Q D / Zhukova, V I

Physical review letters

2023 Volume 131, Issue 11, Page(s) 111803

Abstract: We report a measurement of the CP-violating parameters C and S in B^{0}→K_{S}^{0}π^{0} decays at Belle II using a sample of 387×10^{6} BB[over ¯] events recorded in e^{+}e^{-} collisions at a center-of-mass energy corresponding to the ϒ(4S) resonance. ... ...

Abstract	We report a measurement of the CP-violating parameters C and S in B^{0}→K_{S}^{0}π^{0} decays at Belle II using a sample of 387×10^{6} BB[over ¯] events recorded in e^{+}e^{-} collisions at a center-of-mass energy corresponding to the ϒ(4S) resonance. These parameters are determined by fitting the proper decay-time distribution of a sample of 415 signal events. We obtain C=-0.04_{-0.15}^{+0.14}±0.05 and S=0.75_{-0.23}^{+0.20}±0.04, where the first uncertainties are statistical and the second are systematic.
Language	English
Publishing date	2023-09-29
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.131.111803
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Measurement of the Λ_{c}^{+} Lifetime.

Abudinén, F / Aggarwal, L / Ahmed, H / Ahn, J K / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, T / Aushev, V / Babu, V / Bae, H / Bambade, P / Banerjee, Sw / Bansal, S / Baudot, J / Bauer, M /

Baur, A / Beaubien, A / Becker, J / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhardwaj, V / Bianchi, F / Bilka, T / Biswas, D / Bodrov, D / Bolz, A / Bonvicini, G / Bozek, A / Bračko, M / Branchini, P / Briere, R A / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Chang, M-C / Chang, P / Cheaib, R / Cheema, P / 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 / Cunliffe, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / De Yta-Hernandez, A / Dhamija, R / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dreyer, S / Dujany, G / Eliachevitch, M / Epifanov, D / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finocchiaro, G / Flood, K / Fodor, A / Forti, F / Frey, A / Fulsom, B G / Gabrielli, A / Ganiev, E / Garcia-Hernandez, M / Gaz, A / Gellrich, A / Ghevondyan, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Gradl, W / Granderath, S / Greenwald, D / Gu, T / Guan, Y / Gudkova, K / Guilliams, J / 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 / Hohmann, M / Humair, T / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Iwasaki, Y / Jackson, P / Jacobs, W W / Jaffe, D E / Ji, Q P / Jin, Y / Junkerkalefeld, H / Kaleta, M / Kandra, J / Kang, K H / Karl, R / Karyan, G / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kinoshita, K / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, R / Kumara, K / Kunigo, T / Kwon, Y-J / Lacaprara, S / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Leboucher, R / Lee, S C / Leitl, P / Levit, D / Li, L K / Li, S X / Li, Y B / Libby, J / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Lueck, T / Lyu, C / Maggiora, M / Maiti, R / Maity, S / Manfredi, R / Manoni, E / Marcello, S / Marinas, C / Martel, L / Martini, A / Massaccesi, L / Masuda, M / Matsuoka, K / Matvienko, D / McKenna, J A / Meier, F / Merola, M / Milesi, M / Miller, C / Miyabayashi, K / Mohanty, G B / Molina-Gonzalez, N / Moneta, S / Moon, H / Moser, H-G / Mrvar, M / Mussa, R / Nakamura, I / Nakao, M / Nakayama, H / Narimani Charan, A / Naruki, M / Natkaniec, Z / Natochii, A / Nayak, L / Nayak, M / Nazaryan, G / Niebuhr, C / Nisar, N K / Nishida, S / Nishimura, K / Ono, H / Oskin, P / Oxford, E R / Pakhlova, G / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Parham, K / Park, H / Park, S-H / Passeri, A / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Pham, F / Piilonen, L E / Pinna Angioni, G / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raiz, S / Reif, M / Reiter, S / Ripp-Baudot, I / Rizzo, G / Robertson, S H / Roney, J M / Rostomyan, A / Rout, N / Russo, G / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schwanda, C / Schwartz, A J / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sfienti, C / Shen, C P / Shillington, T / Shiu, J-G / Sibidanov, A / Simon, F / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stroili, R / Strube, J / Sumihama, M / Sumisawa, K / Sutcliffe, W / Suzuki, S Y / Svidras, H / Takahashi, 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 / Uchida, M / Unger, K / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vitale, L / Vobbilisetti, V / Waheed, E / Wakeling, H M / Wang, E / Wang, M-Z / Wang, X L / Warburton, A / Watanuki, S / Welsch, M / Wessel, C / Wiechczynski, J / Windel, H / Won, E / Xu, X P / Yabsley, B D / Yamada, S / Yang, S B / Ye, H / Yelton, J / Yin, J H / Yoshihara, K / Yusa, Y / Zhang, Y / Zhilich, V / Zhou, Q D / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 130, Issue 7, Page(s) 71802

Abstract: An absolute measurement of the Λ_{c}^{+} lifetime is reported using Λ_{c}^{+}→pK^{-}π^{+} decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated ... ...

Abstract	An absolute measurement of the Λ_{c}^{+} lifetime is reported using Λ_{c}^{+}→pK^{-}π^{+} decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the ϒ(4S) resonance, is 207.2 fb^{-1}. The result, τ(Λ_{c}^{+})=203.20±0.89±0.77 fs, where the first uncertainty is statistical and the second systematic, is the most precise measurement to date and is consistent with previous determinations.
Language	English
Publishing date	2023-03-02
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.130.071802
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Article ; Online: Search for a Dark Photon and an Invisible Dark Higgs Boson in μ^{+}μ^{-} and Missing Energy Final States with the Belle II Experiment.

Abudinén, F / Adachi, I / Aggarwal, L / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, T / Aushev, V / Babu, V / Bahinipati, S / Bambade, P / Banerjee, Sw / Bansal, S / Baudot, J / Baur, A / Beaubien, A /

Becker, J / Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertemes, M / Bertholet, E / Bessner, M / Bhuyan, B / Bianchi, F / Bilka, T / Biswas, D / Bobrov, A / Bodrov, D / Bolz, A / Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Bussino, S / Campajola, M / Casarosa, G / Cecchi, C / Chekelian, V / Chen, C / Chen, Y Q / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cinabro, D / Corona, L / Cunliffe, S / Dattola, F / de Marino, G / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Dhamija, R / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dreyer, S / Dubey, S / Dujany, G / Eliachevitch, M / Epifanov, D / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finck, C / Finocchiaro, G / Flood, K / Fodor, A / Forti, F / Frey, A / Fulsom, B G / Ganiev, E / Garcia-Hernandez, M / Gaur, V / Gaz, A / Gellrich, A / Giordano, R / Giri, A / Gobbo, B / Godang, R / Goldenzweig, P / Gradl, W / Granderath, S / Graziani, E / Greenwald, D / Gu, T / Gudkova, K / Guilliams, J / Hadjivasiliou, C / Hara, K / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Hedges, M T / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hoek, M / Hohmann, M / Hsu, C-L / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jackson, P / Jacobs, W W / Jaffe, D E / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Junkerkalefeld, H / Kakuno, 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, K-H / Kim, Y-K / Kinoshita, K / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, R / Kumara, K / Kunigo, T / Kwon, Y-J / Lacaprara, S / Lai, Y-T / Lam, T / Lange, J S / Laurenza, M / Leboucher, R / Lee, S C / Li, L K / Li, Y B / Libby, J / Lieret, K / Liu, Q Y / Liventsev, D / Longo, S / Lozar, A / Lueck, T / Lyu, C / Maggiora, M / Maiti, R / Maity, S / Manfredi, R / Manoni, E / Marcello, S / Marinas, C / Martel, L / Martini, A / Massaccesi, L / Masuda, M / Matsuoka, K / McKenna, J A / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Mohanty, G B / Molina-Gonzalez, N / Moneta, S / Moon, H / Mrvar, M / Nakamura, I / Nakamura, K R / Nakao, M / Nakayama, H / Narimani Charan, A / Naruki, M / Natkaniec, Z / Natochii, A / Nayak, L / Nayak, M / Nisar, N K / Nishida, S / Nishimura, K / Ogawa, S / Ono, H / Oskin, P / Pakhlova, G / Paladino, A / Panta, A / Pardi, S / Parham, K / Park, H / Park, S-H / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Piccolo, M / Piilonen, L E / Pinna Angioni, G / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raiz, S / Ramirez Morales, A / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Robertson, S H / Rodríguez Pérez, D / Roney, J M / Rostomyan, A / Rout, N / Sahoo, D / Sanders, D A / Sandilya, S / Santelj, L / Sato, Y / Scavino, B / Schueler, J / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shillington, T / Shiu, J-G / Sibidanov, A / Simon, F / Singh, J B / Skorupa, J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Sumihama, M / Sumisawa, K / Sutcliffe, W / Suzuki, S Y / Svidras, H / Tabata, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Tanigawa, H / Tenchini, F / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Uchida, M / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vitale, L / Vobbilisetti, V / Waheed, E / Wakeling, H M / Wang, E / Wang, M-Z / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Windel, H / Won, E / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Ye, H / Yin, J H / Yoshihara, K / Yuan, C Z / Yusa, Y / Zani, L / Zhang, Y / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 130, Issue 7, Page(s) 71804

Abstract: The dark photon A^{'} and the dark Higgs boson h^{'} are hypothetical particles predicted in many dark sector models. We search for the simultaneous production of A^{'} and h^{'} in the dark Higgsstrahlung process e^{+}e^{-}→A^{'}h^{'} with A^{'}→μ^{+}μ^{ ...

Abstract	The dark photon A^{'} and the dark Higgs boson h^{'} are hypothetical particles predicted in many dark sector models. We search for the simultaneous production of A^{'} and h^{'} in the dark Higgsstrahlung process e^{+}e^{-}→A^{'}h^{'} with A^{'}→μ^{+}μ^{-} and h^{'} invisible in electron-positron collisions at a center-of-mass energy of 10.58 GeV in data collected by the Belle II experiment in 2019. With an integrated luminosity of 8.34 fb^{-1}, we observe no evidence for signal. We obtain exclusion limits at 90% Bayesian credibility in the range of 1.7-5.0 fb on the cross section and in the range of 1.7×10^{-8}-200×10^{-8} on the effective coupling ϵ^{2}×α_{D} for the A^{'} mass in the range of 4.0 GeV/c^{2}<M_{A^{'}}<9.7 GeV/c^{2} and for the h^{'} mass M_{h^{'}}<M_{A^{'}}, where ϵ is the mixing strength between the standard model and the dark photon and α_{D} is the coupling of the dark photon to the dark Higgs boson. Our limits are the first in this mass range.<br />
Language	English
Publishing date	2023-03-03
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.130.071804
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for an Invisible Z^{'} in a Final State with Two Muons and Missing Energy at Belle II.

Becker, J / Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhuyan, B / Bianchi, F / Bilka, T / Biswas, D / Bodrov, D / Bolz, A / Borah, J / Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Chang, M-C / Chang, P / Cheaib, R / Cheema, P / Chekelian, V / Chen, C / Chen, Y Q / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cinabro, D / Corona, L / Cunliffe, S / Das, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Dhamija, R / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dreyer, S / Dubey, S / Dujany, G / Ecker, P / Eliachevitch, M / Epifanov, D / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finck, C / Finocchiaro, G / Fodor, A / Forti, F / Fulsom, B G / Ganiev, E / Garcia-Hernandez, M / Gaur, V / Gaz, A / Gellrich, A / Ghevondyan, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Granderath, S / Graziani, E / Greenwald, D / Gruberová, Z / Gu, T / Gudkova, K / Guilliams, J / Haigh, H / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hohmann, M / Hsu, C-L / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jackson, P / Jacobs, W W / Jaffe, D E / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Joo, K K / Junkerkalefeld, H / Kakuno, H / Kaliyar, A B / Kang, K H / Kang, S / Karl, R / Karyan, G / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kinoshita, K / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumara, K / Kunigo, T / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Lautenbach, K / Leboucher, R / Le Diberder, F R / Leitl, P / Li, C / Li, L K / Libby, J / Lieret, K / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Lozar, A / Lueck, T / Luo, T / Lyu, C / Maggiora, M / Maiti, R / Maity, S / Manfredi, R / Manoni, E / Marcello, S / Marinas, C / Martel, L / Martini, A / Martinov, T / Massaccesi, L / Masuda, M / Matsuoka, K / Matvienko, D / Maurya, S K / McKenna, J A / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Mizuk, R / Mohanty, G B / Molina-Gonzalez, N / Moneta, S / Moser, H-G / Mrvar, M / Mussa, R / Nakamura, I / Nakamura, K R / Nakao, M / Nakayama, H / Nakazawa, Y / Narimani Charan, A / Naruki, M / Natkaniec, Z / Natochii, A / Nayak, L / Nayak, M / Nazaryan, G / Nisar, N K / Nishida, S / Ogawa, S / Ono, H / Onuki, Y / Oskin, P / Pakhlov, P / Pakhlova, G / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Parham, K / Park, H / Park, S-H / Paschen, B / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Piccolo, M / Piilonen, L E / Pinna Angioni, G / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raeuber, G / Raiz, S / Ramirez Morales, A / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Robertson, S H / Rodríguez Pérez, D / Roney, J M / Rostomyan, A / Rout, N / Russo, G / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schueler, J / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shen, C P / Shillington, T / Shiu, J-G / Sibidanov, A / Simon, F / Singh, J B / Skorupa, J / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sue, Y / Sumihama, M / Sumisawa, K / Sutcliffe, W / Suzuki, S Y / Svidras, H / Takizawa, M / Tamponi, U / Tanida, K / Tanigawa, H / Taniguchi, N / Tenchini, F / Thaller, A / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Uchida, M / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varvell, K E / Vinokurova, A / Vitale, L / Vobbilisetti, V / Wakeling, H M / Wang, E / Wang, M-Z / Wang, X L / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Ye, H / Yin, J H / Yook, Y M / Yoshihara, K / Yuan, C Z / Yusa, Y / Zani, L / Zhang, Y / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 130, Issue 23, Page(s) 231801

Abstract: The L_{μ}-L_{τ} extension of the standard model predicts the existence of a lepton-flavor-universality-violating Z^{'} boson that couples only to the heavier lepton families. We search for such a Z^{'} through its invisible decay in the process e^{+}e^{-} ...

Abstract	The L_{μ}-L_{τ} extension of the standard model predicts the existence of a lepton-flavor-universality-violating Z^{'} boson that couples only to the heavier lepton families. We search for such a Z^{'} through its invisible decay in the process e^{+}e^{-}→μ^{+}μ^{-}Z^{'}. We use a sample of electron-positron collisions at a center-of-mass energy of 10.58 GeV collected by the Belle II experiment in 2019-2020, corresponding to an integrated luminosity of 79.7 fb^{-1}. We find no excess over the expected standard-model background. We set 90%-confidence-level upper limits on the cross section for this process as well as on the coupling of the model, which ranges from 3×10^{-3} at low Z^{'} masses to 1 at Z^{'} masses of 8 GeV/c^{2}.
MeSH term(s)	Humans ; Mesons ; Electrons
Language	English
Publishing date	2023-06-24
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.130.231801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for a τ^{+}τ^{-} Resonance in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} Events with the Belle II Experiment.

Barrett, M / Baudot, J / Bauer, M / Baur, A / Beaubien, A / Becker, J / Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhardwaj, V / Bhuyan, B / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bobrov, A / Bodrov, D / Bolz, A / Borah, J / Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Cerasoli, J / Chang, M-C / Chang, P / Cheaib, R / Cheema, P / Chekelian, V / Chen, Y Q / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cinabro, D / Cochran, J / Corona, L / Cremaldi, L M / Cunliffe, S / Czank, T / Das, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / de Marino, G / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Dhamija, R / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dreyer, S / Dubey, S / Dujany, G / Ecker, P / Eliachevitch, M / Epifanov, D / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finck, C / Finocchiaro, G / Fodor, A / Forti, F / Frey, A / Fulsom, B G / Gabrielli, A / Ganiev, E / Garcia-Hernandez, M / Garmash, A / Gaudino, G / Gaur, V / Gaz, A / Gellrich, A / Ghevondyan, G / Ghosh, D / Ghumaryan, H / Giakoustidis, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Gogota, O / Goldenzweig, P / Gradl, W / Grammatico, T / Granderath, S / Graziani, E / Greenwald, D / Gruberová, Z / Gu, T / Guan, Y / Gudkova, K / Guilliams, J / Halder, S / Han, Y / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / 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 / Humair, T / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jackson, P / Jacobs, W W / Jaffe, D E / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Johnson, A / Joo, K K / Junkerkalefeld, H / Kakuno, H / Kaleta, M / Kalita, D / Kaliyar, A B / Kandra, J / Kang, K H / Kang, S / Karl, R / Karyan, G / Kawasaki, T / Keil, F / Ketter, C / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, M / Kumar, R / Kumara, K / Kunigo, T / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lai, Y-T / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Lautenbach, K / Leboucher, R / Le Diberder, F R / Leitl, P / Levit, D / Lewis, P M / Li, C / Li, L K / Li, Y B / Libby, J / Lieret, K / Liu, Q Y / Liu, Z Q / Liventsev, D / Longo, S / Lozar, A / Lueck, T / Lyu, C / Ma, Y / Maggiora, M / Maharana, S P / Maiti, R / Maity, S / Manfredi, R / Manoni, E / Manthei, A C / Mantovano, M / Marcantonio, D / Marcello, S / Marinas, C / Martel, L / Martellini, C / Martini, A / Martinov, T / Massaccesi, L / Masuda, M / Matsuda, T / Matsuoka, K / Matvienko, D / Maurya, S K / McKenna, J A / Mehta, R / Merola, M / Metzner, F / Milesi, M / Miller, C / Mirra, M / Miyabayashi, K / Miyake, H / Mizuk, R / Mohanty, G B / Molina-Gonzalez, N / Mondal, S / Moneta, S / Moser, H-G / Mrvar, M / Mussa, R / Nakamura, I / Nakamura, K R / Nakao, M / Nakayama, H / Nakazawa, H / Nakazawa, Y / Narimani Charan, A / Naruki, M / Narwal, D / Natkaniec, Z / Natochii, A / Nayak, L / Nayak, M / Nazaryan, G / Niebuhr, C / Nisar, N K / Nishida, S / Ogawa, S / Ono, H / Onuki, Y / Oskin, P / Otani, F / Pakhlov, P / Pakhlova, G / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Parham, K / Park, J / Park, S-H / Paschen, B / Passeri, 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, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raeuber, G / Raiz, S / Ramirez Morales, A / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Rizzuto, L B / Robertson, S H / Rodríguez Pérez, D / Roehrken, M / 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 / Schnepf, M / Schueler, J / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shan, W / Sharma, C / Shen, C P / Shi, X D / Shillington, T / Shiu, J-G / Shtol, D / Shwartz, B / Sibidanov, A / Simon, F / Singh, J B / Skorupa, J / Sobie, R J / Sobotzik, M / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stavroulakis, P / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sue, Y / Sumihama, M / Sumisawa, K / Sutcliffe, W / Suzuki, S Y / Svidras, H / Takahashi, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Tanigawa, H / Tenchini, F / Thaller, A / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Tsaklidis, I / Uchida, M / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vismaya, V S / Vitale, L / Vobbilisetti, V / Volpe, R / Vossen, A / Wach, B / Wakai, M / Wakeling, H M / Wallner, S / Wang, E / Wang, M-Z / Wang, X L / Wang, Z / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Won, E / 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 / Zhai, Y / Zhang, Y / Zhilich, V / Zhou, J S / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 131, Issue 12, Page(s) 121802

Abstract: We report the first search for a nonstandard-model resonance decaying into τ pairs in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} events in the 3.6-10 GeV/c^{2} mass range. We use a 62.8 fb^{-1} sample of e^{+}e^{-} collisions collected at a center-of-mass energy ... ...

Abstract	We report the first search for a nonstandard-model resonance decaying into τ pairs in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} events in the 3.6-10 GeV/c^{2} mass range. We use a 62.8 fb^{-1} sample of e^{+}e^{-} collisions collected at a center-of-mass energy of 10.58 GeV by the Belle II experiment at the SuperKEKB collider. The analysis probes three different models predicting a spin-1 particle coupling only to the heavier lepton families, a Higgs-like spin-0 particle that couples preferentially to charged leptons (leptophilic scalar), and an axionlike particle, respectively. We observe no evidence for a signal and set exclusion limits at 90% confidence level on the product of cross section and branching fraction into τ pairs, ranging from 0.7 to 24 fb, and on the couplings of these processes. We obtain world-leading constraints on the couplings for the leptophilic scalar model for masses above 6.5 GeV/c^{2} and for the axionlike particle model over the entire mass range.
Language	English
Publishing date	2023-10-06
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.131.121802
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

In stock of ZB MED Bonn / Germany

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