Wang, B.Kinoshita, K.Aihara, H.Asner, D. M.Aushev, T.Ayad, R.Babu, V.Badhrees, I.Bakich, A. M.Behera, P.Beleno, C.Bennett, J.Bessner, M.Bhardwaj, V.Bilka, T.Biswal, J.Bobrov, A.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Campajola, M.Cao, L.Chen, A.Chilikin, K.Cho, H. E.Cho, K.Choi, S. -K.Choi, Y.Cinabro, D.Cunliffe, S.Dash, N.Di Capua, F.Di Carlo, S.Dolezal, Z.Eidelman, S.Epifanov, D.Fast, J. E.Ferber, T.Fulsom, B. G.Garg, R.Gaur, V.Garmash, A.Giri, A.Goldenzweig, P.Guan, Y.Hayasaka, K.Hayashii, H.Hou, W. -S.Inami, K.Ishikawa, A.Iwasaki, M.Iwasaki, Y.Jia, S.Jin, Y.Joffe, D.Joo, K. K.Kaliyar, A. B.Kang, K. H.Karyan, G.Kiesling, C.Kim, D. Y.Kim, K. T.Kim, S. H.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kuzmin, A.Kwon, Y. -J.Lange, J. S.Lee, I. S.Lee, J. Y.Lee, S. C.Li, L. K.Li, Y. B.Li Gioi, L.Libby, J.Lieret, K.Liventsev, D.Luo, T.MacNaughton, J.MacQueen, C.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Mussa, R.Nakao, M.Nath, K. J.Nayak, M.Nisar, N. K.Nishida, S.Nishimura, K.Ogawa, S.Ono, H.Onuki, Y.Pakhlova, G.Pal, B.Pang, T.Pardi, S.Park, H.Park, S. -H.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Popov, V.Prencipe, E.Prim, M.Ritter, M.Rostomyan, A.Russo, G.Sandilya, S.Santelj, L.Sanuki, T.Savinov, V.Schneider, O.Schnell, G.Schwanda, C.Schwartz, A. J.Seino, Y.Senyo, K.Sevior, M. E.Shebalin, V.Shiu, J. -G.Sokolov, A.Solovieva, E.Strube, J. F.Sumiyoshi, T.Takizawa, M.Tanida, K.Tenchini, F.Uglov, T.Uno, S.Usov, Y.Van Tonder, R.Varner, G.Vinokurova, A.Waheed, E.Wang, C. H.Wang, M. -Z.Wang, P.Werbycka, O.Won, E.Yang, S. B.Ye, H.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhukova, V.Zhulanov, V.2024-01-222024-01-222022-01-112470-0010https://hdl.handle.net/10919/117484We 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.9 page(s)application/pdfenIn CopyrightArticle - Refereedhttps://doi.org/10.1103/PhysRevD.105.0120041051Piilonen, Leo [0000-0001-6836-0748]2470-0029