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arXiv · 2311.12724

Search for the decay $B_s^0\to J/\psi\pi^0$ at Belle experiment

Belle Collaboration·D. Kumar·B. Bhuyan·H. Aihara·D. M. Asner·T. Aushev·R. Ayad·V. Babu·Sw. Banerjee·M. Bauer·P. Behera·K. Belous·J. Bennett·M. Bessner·T. Bilka·D. Biswas·A. Bobrov·D. Bodrov·J. Borah·M. Bračko·P. Branchini·T. E. Browder·A. Budano·M. Campajola·D. Červenkov·M. -C. Chang·C. Chen·B. G. Cheon·K. Chilikin·K. Cho·S. -K. Choi·Y. Choi·S. Choudhury·S. Das·N. Dash·G. De Nardo·G. De Pietro·R. Dhamija·Z. Doležal·T. V. Dong·P. Ecker·D. Epifanov·D. Ferlewicz·B. G. Fulsom·R. Garg·V. Gaur·A. Garmash·A. Giri·P. Goldenzweig·E. Graziani·K. Gudkova·C. Hadjivasiliou·K. Hayasaka·H. Hayashii·S. Hazra·D. Herrmann·W. -S. Hou·C. -L. Hsu·N. Ipsita·A. Ishikawa·R. Itoh·M. Iwasaki·W. W. Jacobs·S. Jia·Y. Jin·D. Kalita·A. B. Kaliyar·C. Kiesling·C. H. Kim·D. Y. Kim·K. -H. Kim·Y. -K. Kim·K. Kinoshita·P. Kodyš·A. Korobov·S. Korpar·E. Kovalenko·P. Križan·P. Krokovny·T. Kuhr·R. Kumar·K. Kumara·T. Kumita·A. Kuzmin·Y. -J. Kwon·T. Lam·S. C. Lee·D. Levit·L. K. Li·Y. Li·Y. B. Li·L. Li Gioi·J. Libby·D. Liventsev·Y. Ma·M. Masuda·T. Matsuda·D. Matvienko·S. K. Maurya·F. Meier
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Abstract

We have analyzed 121.4 fb$^{-1}$ of data collected at the $\Upsilon(5S)$ resonance by the Belle experiment using the KEKB asymmetric-energy $e^+e^-$ collider to search for the decay $B_s^0\to J/\psi\pi^0$. We observe no signal and report an upper limit on the branching fraction $\mathcal{B}(B_s^0\to J/\psi\pi^0)$ of $1.21\times 10^{-5}$ at 90\% confidence level. This result is the most stringent, improving the previous bound by two orders of magnitude.

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Belle Collaboration, D. Kumar, B. Bhuyan, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, Sw. Banerjee, M. Bauer, P. Behera, K. Belous, J. Bennett, M. Bessner, T. Bilka, D. Biswas, A. Bobrov, D. Bodrov, J. Borah, M. Bračko, P. Branchini, T. E. Browder, A. Budano, M. Campajola, D. Červenkov, M. -C. Chang, C. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. -K. Choi, Y. Choi, S. Choudhury, S. Das, N. Dash, G. De Nardo, G. De Pietro, R. Dhamija, Z. Doležal, T. V. Dong, P. Ecker, D. Epifanov, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, E. Graziani, K. Gudkova, C. Hadjivasiliou, K. Hayasaka, H. Hayashii, S. Hazra, D. Herrmann, W. -S. Hou, C. -L. Hsu, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, D. Kalita, A. B. Kaliyar, C. Kiesling, C. H. Kim, D. Y. Kim, K. -H. Kim, Y. -K. Kim, K. Kinoshita, P. Kodyš, A. Korobov, S. Korpar, E. Kovalenko, P. Križan, P. Krokovny, T. Kuhr, R. Kumar, K. Kumara, T. Kumita, A. Kuzmin, Y. -J. Kwon, T. Lam, S. C. Lee, D. Levit, L. K. Li, Y. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, Y. Ma, M. Masuda, T. Matsuda, D. Matvienko, S. K. Maurya, F. Meier. 2023-11-21. Search for the decay $B_s^0\to J/\psi\pi^0$ at Belle experiment. https://doi.org/10.1103/physrevd.109.032007

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