Measurement of B (Bs →dsX) with Bs semileptonic tagging

B. Wang, K. Kinoshita, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, P. Behera, C. Beleño, J. Bennett, M. Bessner, V. Bhardwaj, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. BračkoT. E. Browder, M. Campajola, L. Cao, D. Červenkov, A. Chen, K. Chilikin, H. E. Cho, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, N. Dash, F. Di Capua, S. Di Carlo, Z. DoleŽal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, Y. Guan, K. Hayasaka, H. Hayashii, W. S. Hou, K. Inami, A. Ishikawa, M. Iwasaki, Y. Iwasaki, S. Jia, Y. Jin, D. Joffe, K. K. Joo, A. B. Kaliyar, K. H. Kang, G. Karyan, C. Kiesling, D. Y. Kim, K. T. Kim, S. H. Kim, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, J. Y. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, T. Luo, J. Macnaughton, C. Macqueen, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, R. Mizuk, G. B. Mohanty, R. Mussa, M. Nakao, K. J. Nath, M. Nayak, N. K. Nisar, S. Nishida, K. Nishimura, S. Ogawa, H. Ono, Y. Onuki, G. Pakhlova, B. Pal, T. Pang, S. Pardi, H. Park, S. H. Park, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, V. Popov, E. Prencipe, M. Prim, M. Ritter, A. Rostomyan, G. Russo, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, V. Shebalin, J. G. Shiu, A. Sokolov, E. Solovieva, M. Starič, J. F. Strube, T. Sumiyoshi, M. Takizawa, K. Tanida, F. Tenchini, T. Uglov, S. Uno, Y. Usov, R. Van Tonder, G. Varner, A. Vinokurova, E. Waheed, C. H. Wang, M. Z. Wang, P. Wang, O. Werbycka, E. Won, S. B. Yang, H. Ye, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov

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1 Citation (Scopus)


We report the first direct measurement of the inclusive branching fraction B(Bs→DsX) via Bs tagging in e+e-→ (5S) events. Tagging is accomplished through a partial reconstruction of semileptonic decays Bs→DsXℓν, where X denotes unreconstructed additional hadrons or photons and ℓ is an electron or muon. With 121.4 fb-1 of data collected at the (5S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider, we obtain B(Bs→DsX)=(60.2±5.8±2.3)%, where the first uncertainty is statistical and the second is systematic.

Original languageEnglish
Article number012004
JournalPhysical Review D
Issue number1
Publication statusPublished - 2022 Jan 1

Bibliographical note

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© 2022 authors. Published by the American Physical Society.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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