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arXiv · 2102.10266

Search for $B_{s}^{0} \rightarrow \eta^{\prime} X_{s\bar{s}}$ at Belle using a semi-inclusive method

Belle Collaboration·S. Dubey·T. E. Browder·H. Aihara·S. Al Said·D. M. Asner·T. Aushev·R. Ayad·V. Babu·S. Bahinipati·P. Behera·J. Bennett·M. Bessner·B. Bhuyan·S. Bilokin·J. Biswal·A. Bobrov·G. Bonvicini·A. Bozek·M. Bračko·M. Campajola·D. Červenkov·B. G. Cheon·K. Chilikin·H. E. Cho·K. Cho·Y. Choi·S. Choudhury·D. Cinabro·S. Cunliffe·S. Das·R. Dhamija·F. Di Capua·Z. Doležal·D. Dossett·S. Eidelman·D. Epifanov·T. Ferber·B. G. Fulsom·R. Garg·V. Gaur·N. Gabyshev·A. Garmash·A. Giri·P. Goldenzweig·B. Golob·D. Greenwald·Y. Guan·K. Gudkova·C. Hadjivasiliou·K. Hayasaka·H. Hayashii·M. T. Hedges·W. -S. Hou·C. -L. Hsu·K. Inami·A. Ishikawa·R. Itoh·M. Iwasaki·Y. Iwasaki·E. -J. Jang·Y. Jin·C. W. Joo·K. K. Joo·A. B. Kaliyar·T. Kawasaki·H. Kichimi·C. H. Kim·D. Y. Kim·S. H. Kim·Y. -K. Kim·T. D. Kimmel·K. Kinoshita·S. Korpar·P. Križan·R. Kroeger·P. Krokovny·T. Kuhr·R. Kulasiri·R. Kumar·K. Kumara·Y. -J. Kwon·K. Lalwani·J. S. Lange·S. C. Lee·C. H. Li·J. Li·L. K. Li·Y. B. Li·L. Li Gioi·J. Libby·D. Liventsev·C. MacQueen·M. Masuda·T. Matsuda·M. Merola·F. Metzner·K. Miyabayashi·R. Mizuk·G. B. Mohanty
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Abstract

We report the first search for the penguin-dominated process $B_{s}^{0} \rightarrow \eta^{\prime} X_{s\bar{s}}$ using a semi-inclusive method. A 121.4 $\mathrm{fb}^{-1}$ integrated luminosity $\Upsilon(5S)$ data set collected by the Belle experiment, at the KEKB asymmetric-energy $e^+e^-$ collider, is used. We observe no statistically significant signal and including all uncertainties, we set a 90\% confidence level upper limit on the partial branching fraction at 1.4 $\times$ 10$^{-3}$ for $M(X_{s\bar{s}})$ $\leq$ 2.4 GeV/$c^{2}$.

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Belle Collaboration, S. Dubey, T. E. Browder, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, J. Bennett, M. Bessner, B. Bhuyan, S. Bilokin, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, M. Campajola, D. Červenkov, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Das, R. Dhamija, F. Di Capua, Z. Doležal, D. Dossett, S. Eidelman, D. Epifanov, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, D. Greenwald, Y. Guan, K. Gudkova, C. Hadjivasiliou, K. Hayasaka, H. Hayashii, M. T. Hedges, W. -S. Hou, C. -L. Hsu, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, E. -J. Jang, Y. Jin, C. W. Joo, K. K. Joo, A. B. Kaliyar, T. Kawasaki, H. Kichimi, C. H. Kim, D. Y. Kim, S. H. Kim, Y. -K. Kim, T. D. Kimmel, K. Kinoshita, S. Korpar, P. Križan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, K. Kumara, Y. -J. Kwon, K. Lalwani, J. S. Lange, S. C. Lee, C. H. Li, J. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, C. MacQueen, M. Masuda, T. Matsuda, M. Merola, F. Metzner, K. Miyabayashi, R. Mizuk, G. B. Mohanty. 2021-02-20. Search for $B_{s}^{0} \rightarrow \eta^{\prime} X_{s\bar{s}}$ at Belle using a semi-inclusive method. https://doi.org/10.1103/physrevd.104.012007

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