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arXiv · 2301.08587

Search for the decay $B^0_s \rightarrow \pi^0 \pi^0$ at Belle

Belle Collaboration·J. Borah·B. Bhuyan·I. Adachi·H. Aihara·D. M. Asner·V. Aulchenko·T. Aushev·R. Ayad·V. Babu·S. Bahinipati·Sw. Banerjee·P. Behera·K. Belous·J. Bennett·M. Bessner·V. Bhardwaj·T. Bilka·D. Biswas·D. Bodrov·A. Bozek·M. Bračko·P. Branchini·T. E. Browder·A. Budano·M. Campajola·D. Červenkov·M. C. Chang·V. Chekelian·C. Chen·B. G. Cheon·K. Chilikin·H. E. Cho·K. Cho·S. J. Cho·S. K. Choi·Y. Choi·S. Choudhury·D. Cinabro·S. Das·G. De Nardo·G. De Pietro·R. Dhamija·F. Di Capua·J. Dingfelder·Z. Doležal·T. V. Dong·D. Epifanov·D. Ferlewicz·A. Frey·B. G. Fulsom·R. Garg·V. Gaur·A. Garmash·A. Giri·P. Goldenzweig·E. Graziani·T. Gu·Y. Guan·K. Gudkova·C. Hadjivasiliou·S. Halder·T. Hara·K. Hayasaka·H. Hayashii·M. T. Hedges·D. Herrmann·M. Hernández Villanueva·W. S. Hou·C. L. Hsu·T. Iijima·K. Inami·G. Inguglia·N. Ipsita·A. Ishikawa·R. Itoh·M. Iwasaki·W. W. Jacobs·E. J. Jang·Q. P. Ji·Y. Jin·K. K. Joo·D. Kalita·A. B. Kaliyar·K. H. Kang·T. Kawasaki·H. Kichimi·C. Kiesling·C. H. Kim·D. Y. Kim·K. H. Kim·Y. K. Kim·K. Kinoshita·P. Kodyš·T. Konno·A. Korobov·S. Korpar·P. Križan·P. Krokovny·T. Kuhr
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Abstract

We report the results of the first search for the decay $B_s^0\rightarrow\pi^0\pi^0$ using $121.4\ \rm fb^{-1}$ of data collected at the $\Upsilon(5\rm S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We observe no signal and set a 90\% confidence level upper limit of $7.7\times 10^{-6}$ on the $B_s^0\rightarrow\pi^0\pi^0$ decay branching fraction.

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Belle Collaboration, J. Borah, B. Bhuyan, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, Sw. Banerjee, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, T. Bilka, D. Biswas, D. Bodrov, A. Bozek, M. Bračko, P. Branchini, T. E. Browder, A. Budano, M. Campajola, D. Červenkov, M. C. Chang, V. Chekelian, C. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. J. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Das, G. De Nardo, G. De Pietro, R. Dhamija, F. Di Capua, J. Dingfelder, Z. Doležal, T. V. Dong, D. Epifanov, D. Ferlewicz, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, E. Graziani, T. Gu, Y. Guan, K. Gudkova, C. Hadjivasiliou, S. Halder, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, D. Herrmann, M. Hernández Villanueva, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, E. J. Jang, Q. P. Ji, Y. Jin, K. K. Joo, D. Kalita, A. B. Kaliyar, K. H. Kang, T. Kawasaki, H. Kichimi, C. Kiesling, C. H. Kim, D. Y. Kim, K. H. Kim, Y. K. Kim, K. Kinoshita, P. Kodyš, T. Konno, A. Korobov, S. Korpar, P. Križan, P. Krokovny, T. Kuhr. 2023-01-20. Search for the decay $B^0_s \rightarrow \pi^0 \pi^0$ at Belle. https://doi.org/10.1103/physrevd.107.l051101

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