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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 | 2020/09 |
| 形態種別 | その他 |
| 標題 | Search for the Decay $B_s^0 \rightarrow η^\prime η$ |
| 執筆形態 | その他 |
| 著者・共著者 | Belle Collaboration,A. Abdesselam,I. Adachi,K. Adamczyk,J. K. Ahn,H. Aihara,S. Al Said,K. Arinstein,Y. Arita,D. M. Asner,H. Atmacan,V. Aulchenko,T. Aushev,R. Ayad,T. Aziz,V. Babu,S. Bahinipati,A. M. Bakich,Y. Ban,E. Barberio,M. Barrett,M. Bauer,P. Behera,C. Beleño,K. Belous,J. Bennett,M. Berger,F. Bernlochner,M. Bessner,D. Besson,V. Bhardwaj,B. Bhuyan,T. Bilka,J. Biswal,T. Bloomfield,A. Bobrov,A. Bondar,G. Bonvicini,A. Bozek,M. Bračko,N. Braun,F. Breibeck,T. E. Browder,M. Campajola,L. Cao,G. Car |
| 概要 | In the Standard Model (SM) charmless hadronic decays $B_s^0 \rightarrow
\eta^\prime \eta$ proceed via tree-level $b\to u$ and penguin $b\to s$ transitions. Penguin transitions are sensitive to Beyond-the-Standard-Model (BSM) physics scenarios and could affect the branching fractions and {\it CP} asymmetries in such decays. Once branching fractions for two-body decays $B_s \to \eta\eta, \eta\eta^{\prime}, \eta^{\prime}\eta^{\prime} $ are measured, and the theoretical uncertainties are reduced, it would be possible to extract {\it CP} violating parameters from the data using the formalism based on SU(3)/U(3) symmetry. To achieve this goal, at least four of these six branching fractions need to be measured. Only the branching fraction for $B_s^0 \to \eta^{\prime}\eta^{\prime}$ has been measured so far. |
| PermalinkURL | http://arxiv.org/abs/2009.06052v1 |
| researchmap用URL | http://arxiv.org/pdf/2009.06052v1 |