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  1. Article ; Online: First Simultaneous Determination of Inclusive and Exclusive |V_{ub}|.

    Cao, L / Bernlochner, F / Tackmann, K / Adachi, I / Aihara, H / Al Said, S / Asner, D M / Atmacan, H / Aushev, T / Ayad, R / Babu, V / Bahinipati, S / Banerjee, Sw / Behera, P / Belous, K / Bennett, J / Bessner, M / Bhuyan, B / Bilka, T /
    Biswas, D / Bobrov, A / Bodrov, D / Borah, J / Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Campajola, M / Červenkov, D / Chang, M-C / Cheon, B G / Chilikin, K / Cho, H E / Cho, K / Cho, S-J / Choi, S-K / Choi, Y / Choudhury, S / Cinabro, D / Cunliffe, S / Das, S / de Marino, G / De Nardo, G / De Pietro, G / Dhamija, R / Di Capua, F / Dingfelder, J / Doležal, Z / Dong, T V / Ferber, T / Ferlewicz, D / Frey, A / Fulsom, B G / Gaur, V / Garmash, A / Giri, A / Goldenzweig, P / Graziani, E / Gu, T / Guan, Y / Gudkova, K / Hadjivasiliou, C / Halder, S / Hara, T / Hartbrich, O / Hayasaka, K / Hayashii, H / Hedges, M T / Herrmann, D / Hou, W-S / Hsu, C-L / Iijima, T / Inami, K / Ipsita, N / Ishikawa, A / Itoh, R / Iwasaki, M / Jacobs, W W / Jang, E-J / Jia, S / Jin, Y / Joo, K K / Kalita, D / Kang, K H / Kiesling, C / Kim, C H / Kim, D Y / Kim, K-H / Kim, Y-K / Kinoshita, K / Kodyš, P / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Križan, P / Krokovny, P / Kuhr, T / Kumar, R / Kumara, K / Kuzmin, A / Kwon, Y-J / Lange, J S / Laurenza, M / Lee, S C / Lewis, P / Li, J / Li, L K / Li, Y / Libby, J / Lin, Y-R / Liventsev, D / Luo, T / Ma, Y / Martini, A / Masuda, M / Matsuda, T / Matvienko, D / Maurya, S K / Meier, F / Merola, M / Metzner, F / Miyabayashi, K / Mizuk, R / Mohanty, G B / Mrvar, M / Mussa, R / Nakamura, I / Nakao, M / Natkaniec, Z / Natochii, A / Nayak, L / Nayak, M / Nisar, N K / Nishida, S / Ogawa, K / Ogawa, S / Ono, H / Oskin, P / Pakhlov, P / Pakhlova, G / Pang, T / Pardi, S / Park, H / Park, J / Park, S-H / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Pestotnik, R / Piilonen, L E / Podobnik, T / Prencipe, E / Prim, M T / Rout, N / Rozanska, M / Russo, G / Sandilya, S / Sangal, A / Santelj, L / Savinov, V / Schnell, G / Schwanda, C / Seino, Y / Senyo, K / Sevior, M E / Shan, W / Shapkin, M / Sharma, C / Shen, C P / Shiu, J-G / Shwartz, B / Sokolov, A / Solovieva, E / Starič, M / Stottler, Z S / Sumihama, M / Sutcliffe, W / Takizawa, M / Tamponi, U / Tanida, K / Tenchini, F / Tiwary, R / Trabelsi, K / Uchida, M / Uglov, T / Unno, Y / Uno, K / Uno, S / Ushiroda, Y / Usov, Y / Vahsen, S E / Varner, G / Varvell, K E / Vossen, A / Wang, D / Wang, E / Wang, M-Z / Watanuki, S / Werbycka, O / Won, E / Xu, X / Yabsley, B D / Yan, W / Yang, S B / Yin, J H / Yook, Y / Yusa, Y / Zhang, Z P / Zhilich, V / Zhukova, V

    Physical review letters

    2023  Volume 131, Issue 21, Page(s) 211801

    Abstract: The first simultaneous determination of the absolute value of the Cabibbo-Kobayashi-Maskawa matrix element V_{ub} using inclusive and exclusive decays is performed with the full Belle data set at the ϒ(4S) resonance, corresponding to an integrated ... ...

    Abstract The first simultaneous determination of the absolute value of the Cabibbo-Kobayashi-Maskawa matrix element V_{ub} using inclusive and exclusive decays is performed with the full Belle data set at the ϒ(4S) resonance, corresponding to an integrated luminosity of 711  fb^{-1}. We analyze collision events in which one B meson is fully reconstructed in hadronic modes. This allows for the reconstruction of the hadronic X_{u} system of the semileptonic b→uℓν[over ¯]_{ℓ} decay. We separate exclusive B→πℓν[over ¯]_{ℓ} decays from other inclusive B→X_{u}ℓν[over ¯]_{ℓ} and backgrounds with a two-dimensional fit that utilizes the number of charged pions in the X_{u} system and the four-momentum transfer q^{2} between the B and X_{u} systems. Combining our measurement with information from lattice QCD and QCD calculations of the inclusive partial rate as well as external experimental information on the shape of the B→πℓν[over ¯]_{ℓ} form factor, we determine |V_{ub}^{excl}|=(3.78±0.23±0.16±0.14)×10^{-3} and |V_{ub}^{incl}|=(3.88±0.20±0.31±0.09)×10^{-3}, respectively, with the uncertainties being the statistical error, systematic errors, and theory errors. The ratio of |V_{ub}^{excl}|/|V_{ub}^{incl}|=0.97±0.12 is compatible with unity.
    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.131.211801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: First Measurement of the B^{+}→π^{+}π^{0}π^{0} Branching Fraction and CP Asymmetry.

    Lai, Y-T / Adachi, I / Aihara, H / Al Said, S / Asner, D M / Atmacan, H / Aulchenko, V / Aushev, T / Ayad, R / Babu, V / Bahinipati, S / Behera, P / Belous, K / Bennett, J / Bessner, M / Bhuyan, B / Bilka, T / Bobrov, A / Borah, J /
    Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Campajola, M / Červenkov, D / Chang, M-C / Chang, P / Chekelian, V / Chen, A / Cheon, B G / Chilikin, K / Cho, H E / Cho, K / Cho, S-J / Choi, S-K / Choi, Y / Cinabro, D / Cunliffe, S / Czank, T / Das, S / De Nardo, G / De Pietro, G / Dhamija, R / Di Capua, F / Dingfelder, J / Doležal, Z / Dong, T V / Ferber, T / Fulsom, B G / Garg, R / Gaur, V / Gabyshev, N / Giri, A / Goldenzweig, P / Graziani, E / Gu, T / Guan, Y / Gudkova, K / Hadjivasiliou, C / Halder, S / Hartbrich, O / Hayasaka, K / Hayashii, H / Higuchi, T / Hou, W-S / Hsu, C-L / Iijima, T / Inami, K / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jacobs, W W / Jang, E-J / Jia, S / Jin, Y / Kaliyar, A B / Kang, K H / Kim, C H / Kim, D Y / Kim, K-H / Kim, Y-K / Kinoshita, K / Kodyš, P / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Križan, P / Krokovny, P / Kumar, M / Kumar, R / Kumara, K / Kuzmin, A / Kwon, Y-J / Lam, T / Lange, J S / Laurenza, M / Lee, S C / Levit, D / Li, J / Li, L K / Li, Y B / Li Gioi, L / Libby, J / Lieret, K / Liventsev, D / Martini, A / Masuda, M / Matvienko, D / Meier, F / Merola, M / Metzner, F / Mizuk, R / Mohanty, G B / Moon, T J / Mrvar, M / Mussa, R / Nakao, M / Natochii, A / Nayak, L / Nisar, N K / Nishida, S / Ogawa, S / Pakhlova, G / Pang, T / Pardi, S / Park, H / Park, S-H / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Pestotnik, R / Piilonen, L E / Podobnik, T / Prencipe, E / Prim, M T / 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 / Sharma, C / Shen, C P / Shiu, J-G / Singh, J B / Sokolov, A / Solovieva, E / Starič, M / Stottler, Z S / Strube, J F / Sumihama, M / Sumisawa, K / Sutcliffe, W / Takizawa, M / Tamponi, U / Tanida, K / Tenchini, F / Trabelsi, K / Uglov, T / Unno, Y / Uno, K / Uno, S / Urquijo, P / van Tonder, R / Varner, G / Varvell, K E / Vinokurova, A / Vossen, A / Waheed, E / Wang, C H / Wang, X L / Watanabe, M / Watanuki, S / Won, E / Yabsley, B D / Yan, W / Yang, S B / Ye, H / Yelton, J / Zhai, Y / Zhang, Z P / Zhilich, V / Zhukova, V

    Physical review letters

    2023  Volume 130, Issue 18, Page(s) 181804

    Abstract: We study B^{+}→π^{+}π^{0}π^{0} using 711  fb^{-1} of data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We measure an inclusive branching fraction of (19.0±1.5±1.4)×10^{-6} and an inclusive CP ...

    Abstract We study B^{+}→π^{+}π^{0}π^{0} using 711  fb^{-1} of data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We measure an inclusive branching fraction of (19.0±1.5±1.4)×10^{-6} and an inclusive CP asymmetry of (9.2±6.8±0.7)%, where the first uncertainties are statistical and the second are systematic, and a B^{+}→ρ(770)^{+}π^{0} branching fraction of (11.2±1.1±0.9_{-1.6}^{+0.8})×10^{-6}, where the third uncertainty is due to possible interference with B^{+}→ρ(1450)^{+}π^{0}. We present the first observation of a structure around 1  GeV/c^{2} in the π^{0}π^{0} mass spectrum, with a significance of 6.4σ, and measure a branching fraction to be (6.9±0.9±0.6)×10^{-6}. We also report a measurement of local CP asymmetry in this structure.
    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.130.181804
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Evidence of a New Excited Charmed Baryon Decaying to Σ_{c}(2455)^{0,++}π^{±}.

    Li, Y B / Shen, C P / Adachi, I / Aihara, H / Asner, D M / Atmacan, H / Aushev, T / Ayad, R / Babu, V / Bahinipati, S / Behera, P / Belous, K / Bennett, J / Bessner, M / Bhardwaj, V / Bhuyan, B / Bilka, T / Bodrov, D / Borah, J /
    Bozek, 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, S-K / Choi, Y / Choudhury, S / Cinabro, D / Das, S / De Pietro, G / Dhamija, R / Di Capua, F / Dingfelder, J / Doležal, Z / Dong, T V / Dossett, D / Epifanov, D / Fulsom, B G / Garg, R / Gaur, V / Garmash, A / Giri, A / Goldenzweig, P / Graziani, E / Gu, T / Guan, Y / Gudkova, K / Hadjivasiliou, C / Hayasaka, K / Hayashii, H / Hou, W-S / Hsu, C-L / Iijima, T / Inami, K / Ipsita, N / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jacobs, W W / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Joo, K K / Karyan, G / Kawasaki, T / Kichimi, H / Kiesling, C / Kim, C H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kinoshita, K / Kodyš, P / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Križan, P / Krokovny, P / Kumar, M / Kumar, R / Kumara, K / Kwon, Y-J / Lam, T / Lange, J S / Laurenza, M / Lee, S C / Li, C H / Li, J / Li, L K / Li, Y / Li Gioi, L / Libby, J / Lieret, K / Liventsev, D / Masuda, M / Matsuda, T / Matvienko, D / Maurya, S K / Meier, F / Merola, M / Metzner, F / Miyabayashi, K / Mizuk, R / Mohanty, G B / Nakamura, I / Nakao, M / Natkaniec, Z / Natochii, A / Nayak, L / Niiyama, M / Nisar, N K / Nishida, S / Ogawa, S / Ono, H / Oskin, P / 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 / Prencipe, E / Prim, M T / Rout, N / Russo, G / Sandilya, S / Santelj, L / Savinov, V / Schnell, G / Schueler, J / Schwanda, C / Seino, Y / Senyo, K / Sevior, M E / Shapkin, M / Sharma, C / Shiu, J-G / Singh, J B / Sokolov, A / Solovieva, E / Starič, M / Stottler, Z S / Sumihama, M / Sumiyoshi, T / Sutcliffe, W / Takizawa, M / Tamponi, U / Tanida, K / Tenchini, F / Trabelsi, K / Tsuboyama, T / Uchida, M / Uglov, T / Unno, Y / Uno, S / Usov, Y / van Tonder, R / Varner, G / Varvell, K E / Waheed, E / Wang, E / Wang, M-Z / Watanabe, M / Watanuki, S / Werbycka, O / Wiechczynski, J / Won, E / Yabsley, B D / Yan, W / Yang, S B / Yelton, J / Yin, J H / Yuan, C Z / Yusa, Y / Zhai, Y / Zhang, Z P / Zhilich, V / Zhukova, V

    Physical review letters

    2023  Volume 130, Issue 3, Page(s) 31901

    Abstract: We present the study of B[over ¯]^{0}→Σ_{c}(2455)^{0,++}π^{±}p[over ¯] decays based on 772×10^{6}  BB[over ¯] events collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The Σ_{c}(2455)^{0,++} candidates are reconstructed ... ...

    Abstract We present the study of B[over ¯]^{0}→Σ_{c}(2455)^{0,++}π^{±}p[over ¯] decays based on 772×10^{6}  BB[over ¯] events collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The Σ_{c}(2455)^{0,++} candidates are reconstructed via their decay to Λ_{c}^{+}π^{∓} and Λ_{c}^{+} decays to pK^{-}π^{+}, pK_{S}^{0}, and Λπ^{+} final states. The corresponding branching fractions are measured to be B(B[over ¯]^{0}→Σ_{c}(2455)^{0}π^{+}p[over ¯])=(1.09±0.06±0.07)×10^{-4} and B(B[over ¯]^{0}→Σ_{c}(2455)^{++}π^{-}p[over ¯])=(1.84±0.11±0.12)×10^{-4}, which are consistent with the world average values with improved precision. A new structure is found in the M_{Σ_{c}(2455)^{0,++}π^{±}} spectrum with a significance of 4.2σ including systematic uncertainty. The structure is possibly an excited Λ_{c}^{+} and is tentatively named Λ_{c}(2910)^{+}. Its mass and width are measured to be (2913.8±5.6±3.8)  MeV/c^{2} and (51.8±20.0±18.8)  MeV, respectively. The products of branching fractions for the Λ_{c}(2910)^{+} are measured to be B(B[over ¯]^{0}→Λ_{c}(2910)^{+}p[over ¯])×B(Λ_{c}(2910)^{+}→Σ_{c}(2455)^{0}π^{+})=(9.5±3.6±1.6)×10^{-6} and B(B[over ¯]^{0}→Λ_{c}(2910)^{+}p[over ¯])×B(Λ_{c}(2910)^{+}→Σ_{c}(2455)^{++}π^{-})=(1.24±0.35±0.10)×10^{-5}. Here, the first and second uncertainties are statistical and systematic, respectively.
    Language English
    Publishing date 2023-02-10
    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.130.031901
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: First Measurement of the Michel Parameter ξ^{'} in the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} Decay at Belle.

    Bodrov, D / Pakhlov, P / Adachi, I / Aihara, H / Said, S Al / Asner, D M / Atmacan, H / Aushev, T / Ayad, R / Babu, V / Banerjee, Sw / Behera, P / Belous, K / Bennett, J / Bessner, M / Bhuyan, B / Bilka, T / Biswas, D / Bobrov, A /
    Bondar, A / Borah, J / Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Campajola, M / Červenkov, D / Chang, M-C / Cheon, B G / Chilikin, K / Cho, H E / Cho, K / Cho, S-J / Choi, S-K / Choi, Y / Choudhury, S / Cinabro, D / Das, S / De Nardo, G / De Pietro, G / Dhamija, R / Di Capua, F / Dingfelder, J / Doležal, Z / Dong, T V / Epifanov, D / Ferber, T / Ferlewicz, D / Fulsom, B G / Gaur, V / Garmash, A / Giri, A / Goldenzweig, P / Graziani, E / Greenwald, D / Gu, T / Guan, Y / Gudkova, K / Hadjivasiliou, C / Halder, S / Hayasaka, K / Hayashii, H / Hedges, M T / Herrmann, D / Hou, W-S / Hsu, C-L / Iijima, T / Inami, K / Ipsita, N / Ishikawa, A / Itoh, R / Iwasaki, M / Jacobs, W W / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Joo, K K / Kalita, D / Kaliyar, A B / Kawasaki, T / Kiesling, C / Kim, C H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kinoshita, K / Kodyš, P / Korpar, S / Križan, P / Krokovny, P / Kuhr, T / Kumar, M / Kumar, R / Kumara, K / Kwon, Y-J / Lange, J S / Lee, S C / Li, J / Li, L K / Libby, J / Lieret, K / Lin, Y-R / Liventsev, D / Luo, T / Ma, Y / Masuda, M / Matsuda, T / Maurya, S K / Meier, F / Merola, M / Metzner, F / Miyabayashi, K / Mizuk, R / Mohanty, G B / Mussa, R / Nakao, M / Narwal, D / Natkaniec, Z / Natochii, A / Nayak, L / Nayak, M / Nisar, N K / Nishida, S / Ogawa, S / Oskin, P / Pakhlova, G / Pardi, S / Park, H / Park, J / Park, S-H / Passeri, A / Patra, S / Paul, S / Pestotnik, R / Piilonen, L E / Podobnik, T / Prencipe, E / Prim, M T / Rabusov, A / Rout, N / Russo, G / Sandilya, S / Sangal, A / Santelj, L / Savinov, V / Schnell, G / Schwanda, C / Seino, Y / Senyo, K / Shan, W / Shapkin, M / Sharma, C / Shiu, J-G / Singh, J B / Sokolov, A / Solovieva, E / Starič, M / Stottler, Z S / Sumihama, M / Takizawa, M / Tamponi, U / Tanida, K / Tenchini, F / Tiwary, R / Trabelsi, K / Uchida, M / Uglov, T / Unno, Y / Uno, K / Uno, S / Vahsen, S E / Varner, G / Vinokurova, A / Vossen, A / Wang, D / Wang, E / Wang, M-Z / Watanuki, S / Werbycka, O / Xu, X / Yabsley, B D / Yan, W / Yang, S B / Yelton, J / Yin, J H / Yuan, C Z / Yusa, Y / Zhang, Z P / Zhilich, V / Zhukova, V

    Physical review letters

    2023  Volume 131, Issue 2, Page(s) 21801

    Abstract: We report the first measurement of the Michel parameter ξ^{'} in the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} decay with a new method proposed just recently. The measurement is based on the reconstruction of the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} events with subsequent ... ...

    Abstract We report the first measurement of the Michel parameter ξ^{'} in the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} decay with a new method proposed just recently. The measurement is based on the reconstruction of the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} events with subsequent muon decay in flight in the Belle central drift chamber. The analyzed data sample of 988  fb^{-1} collected by the Belle detector corresponds to approximately 912×10^{6} τ^{+}τ^{-} pairs. We measure ξ^{'}=0.22±0.94(stat)±0.42(syst), which is in agreement with the standard model prediction of ξ^{'}=1. Statistical uncertainty dominates in this study, being a limiting factor, while systematic uncertainty is well under control. Our analysis proved the practicability of this promising method and its prospects for further precise measurement in future experiments.
    Language English
    Publishing date 2023-07-28
    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.131.021801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Kategorien

    In stock of ZB MED Bonn / Germany

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  5. Article ; Online: Search for a Light Higgs Boson in Single-Photon Decays of ϒ(1S) Using ϒ(2S)→π^{+}π^{-}ϒ(1S) Tagging Method.

    Jia, S / Shen, C P / Adachi, I / Aihara, H / Al Said, S / Asner, D M / Atmacan, H / Aushev, T / Ayad, R / Babu, V / Behera, P / Belous, K / Bennett, J / Bessner, M / Bhardwaj, V / Bhuyan, B / Bilka, T / Bobrov, A / Bodrov, D /
    Bonvicini, G / Borah, J / Bračko, M / Branchini, P / Browder, T E / Budano, A / Campajola, M / Červenkov, D / Chang, M-C / Chang, P / Chekelian, V / Chen, A / Cheon, B G / Chilikin, K / Cho, H E / Cho, K / Cho, S-J / Choi, S-K / Choi, Y / Choudhury, S / Cinabro, D / Cunliffe, S / Das, S / Dash, N / De Nardo, G / De Pietro, G / Dhamija, R / Di Capua, F / Doležal, Z / Dong, T V / Epifanov, D / Ferber, T / Ferlewicz, D / Fulsom, B G / Garg, R / Gaur, V / Gabyshev, N / Giri, A / Goldenzweig, P / Golob, B / Graziani, E / Guan, Y / Gudkova, K / Hadjivasiliou, C / Hara, T / Hayasaka, K / Hayashii, H / Hedges, M T / Hou, W-S / Inami, K / Inguglia, G / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jacobs, W W / Jang, E-J / Jin, Y / Joo, K K / Kahn, J / Kaliyar, A B / Kang, K H / Kawasaki, T / Kiesling, C / Kim, C H / Kim, D Y / Kim, K-H / Kim, Y-K / Kinoshita, K / Kodyš, P / Kohani, S / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Križan, P / Kroeger, R / Krokovny, P / Kumar, M / Kumar, R / Kumara, K / Kwon, Y-J / Lam, T / Laurenza, M / Lee, S C / Li, J / Li, L K / Li, Y / Li, Y B / Li Gioi, L / Libby, J / Lieret, K / Liventsev, D / Martini, A / Masuda, M / Matsuda, T / Matvienko, D / Maurya, S K / Meier, F / Merola, M / Metzner, F / Miyabayashi, K / Mizuk, R / Mohanty, G B / Mussa, R / Nakao, M / Narwal, D / Natkaniec, Z / Natochii, A / Nayak, L / Nisar, N K / Nishida, S / Nishimura, K / Ogawa, K / Ogawa, S / Ono, H / Oskin, P / Pakhlov, P / Pakhlova, G / Pang, T / Pardi, S / Park, S-H / Patra, S / Paul, S / Pedlar, T K / Pestotnik, R / Piilonen, L E / Podobnik, T / Prencipe, E / Prim, M T / Röhrken, M / Rostomyan, A / Rout, N / Russo, G / Sahoo, D / 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 / Sharma, C / Shebalin, V / Shiu, J-G / Shwartz, B / Singh, J B / Sokolov, A / Solovieva, E / Stanič, S / Starič, M / Stottler, Z S / Sumihama, M / Sumisawa, K / Sumiyoshi, T / Sutcliffe, W / Takizawa, M / Tamponi, U / Tanida, K / Tenchini, F / Trabelsi, K / Uchida, M / Uehara, S / Uglov, T / Unno, Y / Uno, K / Uno, S / Urquijo, P / Vahsen, S E / Van Tonder, R / Varner, G / Vinokurova, A / Waheed, E / Wang, D / Wang, E / Wang, M-Z / Watanuki, S / Won, E / Yabsley, B D / Yan, W / Yang, S B / Ye, H / Yelton, J / Yin, J H / Yusa, Y / Zhai, Y / Zhang, Z P / Zhilich, V / Zhukova, V

    Physical review letters

    2022  Volume 128, Issue 8, Page(s) 81804

    Abstract: We search for a light Higgs boson (A^{0}) decaying into a τ^{+}τ^{-} or μ^{+}μ^{-} pair in the radiative decays of ϒ(1S). The production of ϒ(1S) mesons is tagged by ϒ(2S)→π^{+}π^{-}ϒ(1S) transitions, using 158×10^{6} ϒ(2S) events accumulated with the ... ...

    Abstract We search for a light Higgs boson (A^{0}) decaying into a τ^{+}τ^{-} or μ^{+}μ^{-} pair in the radiative decays of ϒ(1S). The production of ϒ(1S) mesons is tagged by ϒ(2S)→π^{+}π^{-}ϒ(1S) transitions, using 158×10^{6} ϒ(2S) events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant A^{0} signals in the mass range from the τ^{+}τ^{-} or μ^{+}μ^{-} threshold to 9.2  GeV/c^{2} are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for ϒ(1S)→γA^{0} and A^{0}→τ^{+}τ^{-} varying from 3.8×10^{-6} to 1.5×10^{-4}. Our results represent an approximately twofold improvement on the current world best upper limits for the ϒ(1S)→γA^{0}(→τ^{+}τ^{-}) production. For A^{0}→μ^{+}μ^{-}, the upper limits on the product branching fractions for ϒ(1S)→γA^{0} and A^{0}→μ^{+}μ^{-} are at the same level as the world average limits, and vary from 3.1×10^{-7} to 1.6×10^{-5}. The upper limits at 90% credibility level on the Yukawa coupling f_{ϒ(1S)} and mixing angle sinθ_{A^{0}} are also given.
    Language English
    Publishing date 2022-03-11
    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.128.081804
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Measurement of Two-Particle Correlations of Hadrons in e^{+}e^{-} Collisions at Belle.

    Chen, Y-C / Lee, Y-J / Chang, P / Adachi, I / Aihara, H / Al Said, S / Asner, D M / Aushev, T / Ayad, R / Babu, V / Behera, P / Belous, K / Bennett, J / Bessner, M / Bilka, T / Bodrov, D / Borah, J / Bračko, M / Branchini, P /
    Browder, T E / Budano, A / Campajola, M / Červenkov, D / Chang, M-C / Chekelian, V / Cheon, B G / Chilikin, K / Cho, H E / Cho, K / Cho, S-J / Choi, S-K / Choi, Y / Cinabro, D / Das, S / De Nardo, G / De Pietro, G / Dhamija, R / Di Capua, F / Dingfelder, J / Dong, T V / Dossett, D / Epifanov, D / Ferber, T / Fulsom, B G / Garg, R / Gaur, V / Giri, A / Goldenzweig, P / Gu, T / Gudkova, K / Hadjivasiliou, C / Hartbrich, O / Hayasaka, K / Hayashii, H / Hou, W-S / Hsu, C-L / Iijima, T / Inami, K / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jacobs, W W / Jia, S / Jin, Y / Kaliyar, A B / Kim, C H / Kim, D Y / Kim, K-H / Kim, Y-K / Kodyš, P / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Križan, P / Kroeger, R / Krokovny, P / Kumar, M / Kumar, R / Kumara, K / Kuzmin, A / Kwon, Y-J / Lai, Y-T / Lam, T / Lange, J S / Laurenza, M / Lee, S C / Li, J / Li, Y / Li, Y B / Li Gioi, L / Libby, J / Lieret, K / Lin, C-W / Liventsev, D / Martini, A / Masuda, M / Matsuda, T / Matvienko, D / Meier, F / Merola, M / Metzner, F / Miyabayashi, K / Mohanty, G B / Moon, T J / Mussa, R / Nakao, M / Natochii, A / Nayak, L / Nisar, N K / Nishida, S / Nishimura, K / Ogawa, S / Ono, H / Pakhlova, G / Pang, T / Pardi, S / Park, S-H / Patra, S / Paul, S / Pedlar, T K / Piilonen, L E / Podobnik, T / Prencipe, E / Prim, M T / Rout, N / Russo, G / Sahoo, D / Sandilya, S / Sangal, A / Santelj, L / Sanuki, T / Savinov, V / Schnell, G / Schwanda, C / Seidl, R / Seino, Y / Sevior, M E / Shapkin, M / Shiu, J-G / Singh, J B / Sokolov, A / Solovieva, E / Starič, M / Stottler, Z S / Sumihama, M / Sumisawa, K / Sutcliffe, W / Takizawa, M / Tamponi, U / Tanida, K / Tenchini, F / Uchida, M / Uglov, T / Unno, Y / Uno, K / Uno, S / Van Tonder, R / Varner, G / Vinokurova, A / Vossen, A / Waheed, E / Wang, C H / Wang, D / Wang, E / Wang, X L / Watanuki, S / Won, E / Yan, W / Yang, S B / Ye, H / Yelton, J / Zhai, Y / Zhang, Z P / Zhilich, V / Zhukova, V

    Physical review letters

    2022  Volume 128, Issue 14, Page(s) 142005

    Abstract: The measurement of two-particle angular correlation functions in high-multiplicity e^{+}e^{-} collisions at sqrt[s]=10.52  GeV is reported. In this study, the 89.5  fb^{-1} of hadronic e^{+}e^{-} annihilation data collected by the Belle detector at KEKB ... ...

    Abstract The measurement of two-particle angular correlation functions in high-multiplicity e^{+}e^{-} collisions at sqrt[s]=10.52  GeV is reported. In this study, the 89.5  fb^{-1} of hadronic e^{+}e^{-} annihilation data collected by the Belle detector at KEKB are used. Two-particle angular correlation functions are measured in the full relative azimuthal angle (Δϕ) and three units of pseudorapidity (Δη), defined by either the electron beam axis or the event-shape thrust axis, and are studied as a function of charged-particle multiplicity. The measurement in the thrust axis analysis, with mostly outgoing quark pairs determining the reference axis, is sensitive to the region of additional soft gluon emissions. No significant anisotropic collective behavior is observed with either coordinate analyses. Near-side jet correlations appear to be absent in the thrust axis analysis. The measurements are compared to predictions from various event generators and are expected to provide new constraints to the phenomenological models in the low-energy regime.
    Language English
    Publishing date 2022-04-27
    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.128.142005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Measurements of the Branching Fractions of the Semileptonic Decays Ξ_{c}^{0}→Ξ^{-}ℓ^{+}ν_{ℓ} and the Asymmetry Parameter of Ξ_{c}^{0}→Ξ^{-}π^{+}.

    Li, Y B / Shen, C P / Adachi, I / Adamczyk, K / Aihara, H / Al Said, S / Asner, D M / Aushev, T / Ayad, R / Babu, V / Behera, P / Bennett, J / Bessner, M / Bhardwaj, V / Bhuyan, B / Bilka, T / Biswal, J / Bonvicini, G / Bozek, A /
    Bračko, M / Browder, T E / Campajola, M / Červenkov, D / Chang, M-C / Chen, A / Cheon, B G / Chilikin, K / Cho, K / Cho, S-J / Choi, S-K / Choi, Y / Choudhury, S / Cinabro, D / Cunliffe, S / Das, S / Dash, N / De Nardo, G / Dhamija, R / Di Capua, F / Dong, T V / Eidelman, S / Epifanov, D / Ferber, T / Fulsom, B G / Garg, R / Gaur, V / Gabyshev, N / Garmash, A / Giri, A / Goldenzweig, P / Grzymkowska, O / Gudkova, K / Hadjivasiliou, C / Hartbrich, O / Hayasaka, K / Hayashii, H / Hernandez Villanueva, M / Hsu, C-L / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jacobs, W W / Jia, S / Jin, Y / Joo, C W / Joo, K K / Kang, K H / Karyan, G / Kato, Y / Kichimi, H / Kim, C H / Kim, D Y / Kim, K-H / Kim, S H / Kinoshita, K / Kodyš, P / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Križan, P / Kroeger, R / Krokovny, P / Kuhr, T / Kumar, M / Kumar, R / Kumara, K / Kuzmin, A / Kwon, Y-J / Lalwani, K / Lange, J S / Lee, I S / Lee, S C / Li, C H / Li, L K / Li Gioi, L / Libby, J / Lieret, K / Liventsev, D / Masuda, M / Matvienko, D / McNeil, J T / Metzner, F / Mizuk, R / Mohanty, G B / Moon, T J / Mori, T / Mussa, R / Natochii, A / Nayak, L / Nayak, M / Niiyama, M / Nisar, N K / Nishida, S / Nishimura, K / Ogawa, S / Ono, H / Onuki, Y / Pakhlov, P / Pakhlova, G / Pang, T / 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 / Röhrken, M / Rostomyan, A / Rout, N / Russo, G / Sahoo, D / Sakai, Y / Sandilya, S / Santelj, L / Sanuki, T / Savinov, V / Schnell, G / Schwanda, C / Seino, Y / Senyo, K / Shapkin, M / Sharma, C / Shiu, J-G / Sokolov, A / Solovieva, E / Starič, M / Stottler, Z S / Sumihama, M / Tamponi, U / Tanida, K / Tenchini, F / Uchida, M / Uehara, S / Uglov, T / Uno, K / Uno, S / Usov, Y / Van Tonder, R / Varner, G / Vinokurova, A / Vossen, A / Wang, C H / Wang, M-Z / Wang, P / Wang, X L / Watanabe, M / Watanuki, S / Won, E / Xu, X / Yan, W / Yang, S B / Ye, H / Yin, J H / Yuan, C Z / Zhang, Z P / Zhilich, V / Zhukova, V

    Physical review letters

    2021  Volume 127, Issue 12, Page(s) 121803

    Abstract: Using data samples of 89.5 and 711  fb^{-1} recorded at energies of sqrt[s]=10.52 and 10.58 GeV, respectively, with the Belle detector at the KEKB e^{+}e^{-} collider, we report measurements of branching fractions of semileptonic decays Ξ_{c}^{0}→Ξ^{-}ℓ^{ ...

    Abstract Using data samples of 89.5 and 711  fb^{-1} recorded at energies of sqrt[s]=10.52 and 10.58 GeV, respectively, with the Belle detector at the KEKB e^{+}e^{-} collider, we report measurements of branching fractions of semileptonic decays Ξ_{c}^{0}→Ξ^{-}ℓ^{+}ν_{ℓ} (ℓ=e or μ) and the CP-asymmetry parameter of Ξ_{c}^{0}→Ξ^{-}π^{+} decay. The branching fractions are measured to be B(Ξ_{c}^{0}→Ξ^{-}e^{+}ν_{e})=(1.31±0.04±0.07±0.38)% and B(Ξ_{c}^{0}→Ξ^{-}μ^{+}ν_{μ})=(1.27±0.06±0.10±0.37)%, and the decay parameter α_{Ξπ} is measured to be 0.63±0.03±0.01 with much improved precision compared with the current world average. The corresponding ratio B(Ξ_{c}^{0}→Ξ^{-}e^{+}ν_{e})/B(Ξ_{c}^{0}→Ξ^{-}μ^{+}ν_{μ}) is 1.03±0.05±0.07, which is consistent with the expectation of lepton flavor universality. The first measured asymmetry parameter A_{CP}=(α_{Ξ^{-}π^{+}}+α_{Ξ[over ¯]^{+}π^{-}})/(α_{Ξ^{-}π^{+}}-α_{Ξ[over ¯]^{+}π^{-}})=0.024±0.052±0.014 is found to be consistent with zero. The first and the second uncertainties above are statistical and systematic, respectively, while the third ones arise due to the uncertainty of the Ξ_{c}^{0}→Ξ^{-}π^{+} branching fraction.
    Language English
    Publishing date 2021-10-01
    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.127.121803
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. 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
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  9. 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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  10. 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

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 4' 58/153: Show issues

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