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arXiv · 2009.06052

Search for the Decay $B_s^0 \rightarrow \eta^\prime \eta$

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. Caria·D. Červenkov·M. -C. Chang·P. Chang·Y. Chao·V. Chekelian·A. Chen·K. -F. Chen·Y. Chen·Y. -T. Chen·B. G. Cheon·K. Chilikin·H. E. Cho·K. Cho·S. -J. Cho·V. Chobanova·S. -K. Choi·Y. Choi·S. Choudhury·D. Cinabro·J. Crnkovic·S. Cunliffe·T. Czank·S. Das·N. Dash·G. De Nardo·R. Dhamija·F. Di Capua·J. Dingfelder·Z. Doležal·T. V. Dong·D. Dossett·Z. Drásal·S. Dubey·S. Eidelman·D. Epifanov·M. Feindt·T. Ferber·A. Frey·O. Frost·B. G. Fulsom·R. Garg·V. Gaur·N. Gabyshev·A. Garmash·M. Gelb·J. Gemmler·D. Getzkow·F. Giordano·A. Giri·P. Goldenzweig·B. Golob·D. Greenwald·M. Grosse Perdekamp·J. Grygier
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Abstract

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.

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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. Caria, D. Červenkov, M. -C. Chang, P. Chang, Y. Chao, V. Chekelian, A. Chen, K. -F. Chen, Y. Chen, Y. -T. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. -J. Cho, V. Chobanova, S. -K. Choi, Y. Choi, S. Choudhury, D. Cinabro, J. Crnkovic, S. Cunliffe, T. Czank, S. Das, N. Dash, G. De Nardo, R. Dhamija, F. Di Capua, J. Dingfelder, Z. Doležal, T. V. Dong, D. Dossett, Z. Drásal, S. Dubey, S. Eidelman, D. Epifanov, M. Feindt, T. Ferber, A. Frey, O. Frost, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, J. Gemmler, D. Getzkow, F. Giordano, A. Giri, P. Goldenzweig, B. Golob, D. Greenwald, M. Grosse Perdekamp, J. Grygier. 2020-09-13. Search for the Decay $B_s^0 \rightarrow \eta^\prime \eta$. https://arxiv.org/abs/2009.06052

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