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

Date Issued
01-01-2022
Author(s)
Wang, B.
Kinoshita, K.
Aihara, H.
Asner, D. M.
Aushev, T.
Ayad, R.
Babu, V.
Badhrees, I.
Bakich, A. M.
Behera, P.
Beleño, C.
Bennett, J.
Bessner, M.
Bhardwaj, V.
Bilka, T.
Biswal, J.
Bobrov, A.
Bonvicini, G.
Bozek, A.
BraÄ ko, M.
Browder, T. E.
Campajola, M.
Cao, L.
ÄŒervenkov, D.
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.
DoleŽal, 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.
Kodyš, P.
Korpar, S.
Kotchetkov, D.
KriŽan, 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.
Indian Institute of Technology, Madras
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.
DOI
Abstract
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.
Volume
105