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新山 雅之 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 発行・発表の年月 | 2021/11 |
| 形態種別 | その他 |
| 標題 | Search for the decay $B_s^0\rightarrowηη$ |
| 執筆形態 | その他 |
| 著者・共著者 | Belle Collaboration,B. Bhuyan,K. J. Nath,J. Borah,I. Adachi,H. Aihara,S. Al Said,D. M. Asner,H. Atmacan,V. Aulchenko,T. Aushev,R. Ayad,V. Babu,I. Badhrees,A. M. Bakich,P. Behera,J. Bennett,V. Bhardwaj,T. Bilka,J. Biswal,A. Bobrov,A. Bozek,M. Bračko,T. E. Browder,M. Campajola,D. Červenkov,V. Chekelian,A. Chen,B. G. Cheon,K. Chilikin,K. Cho,S. -K. Choi,Y. Choi,S. Choudhury,D. Cinabro,S. Cunliffe,N. Dash,F. Di Capua,S. Di Carlo,Z. Doležal,T. V. Dong,S. Dubey,S. Eidelman,J. E. Fast,T. Ferber,B. G. F |
| 概要 | We report results from a search for the decay $B_s^0\rightarrow\eta\eta$
using 121.4 fb$^{-1}$ of data collected at the $\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We do not observe any signal and set an upper limit on the branching fraction of $14.3\times 10^{-5}$ at $90\%$ confidence level. This result represents a significant improvement over the previous most stringent limit. |
| DOI | 10.1103/PhysRevD.105.012007 |
| PermalinkURL | http://arxiv.org/abs/2111.14437v2 |
| researchmap用URL | http://arxiv.org/pdf/2111.14437v2 |