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| 題名: | Semi-inclusive studies of semileptonic Bs decays at Belle |
| 作者: | 陳鎰鋒;Urquijo, P.;Dingfelder, J.;Adachi, I.;Said, S. Al;Badhrees, I.;Bakich, A. M.;Bhardwaj, V.;Bobrov, A.;Bonvicini, G.;Bračko, M.;Browder, T. E.;Chang, M.-C.;Chekelian, V.;Chen, A.;Chobanova, V.;Cinabro, D.;Doležal, Z.;Drutskoy, A.;Dutta, D.;Farhat, H.;Fast, J. E.;Frost, O.;Garmash, A.;Getzkow, D.;Glattauer, R.;Goldenzweig, P.;Golob, B.;Hara, T.;Hayasaka, K.;Hou, W.-S.;Huschle, M.;Julius, T.;Kang, K. H.;Kapusta, P.;Kato, E.;Kawasaki, T.;Kiesling, C.;Kim, K. T.;Kim, M. J.;Kinoshita, K.;Ko, B. R.;Kodyš, P.;Križan, P.;Krokovny, P.;Kwon, Y.-J.;Lee, D. H.;Lee, I. S.;Li, Y.;Gioi, L. Li;Libby, J.;Liventsev, D.;Matvienko, D.;Mizuk, R.;Moll, A.;Moon, H. K.;Nakano, E.;Nakao, M.;Nakazawa, H.;Nanut, T.;Nayak, M.;Nishida, S.;Pakhlov, P.;Park, C. W.;Park, H.;Pedlar, T. K.;Pestotnik, R.;Petrič, M.;Piilonen, L. E.;Ritter, M.;Rostomyan, A.;Ryu, S.;Sakai, Y.;Sanuki, T.;Schnell, G.;Schwanda, C.;Senyo, K.;Seon, O.;Shapkin, M.;Shebalin, V.;Shiu, J.-G.;Solovieva, E.;Starič, M.;Stypula, J.;Sumiyoshi, T.;Trabelsi, K.;Unno, Y.;Uno, S.;Vanhoefer, P.;Varner, G.;Vinokurova, A.;Vossen, A.;Wagner, M. N.;Wang, C. H.;Wang, P.;Wang, X. L.;Won, E.;Yamamoto, H.;Zhang, Z. P.;Zhulanov, V.;Zupanc, A. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | 10.86 GeV-cms;B/s --> D/s lepton neutrino;B/s: branching ratio;B/s: decay;BELLE;ddc:530;electron;experimental results;FOS: Physical sciences;hadron;High Energy Physics - Experiment;High Energy Physics - Experiment (hep-ex);info:eu-repo/classification/ddc/530;K+ K;KEK-B;muon;photon;Physics;semi-inclusive reaction;statistical;Upsilon |
| 日期: | 2015-10-22 |
| 上傳時間: | 2026-04-23 14:22:41 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： We present an analysis of the semi-inclusive decays $B_s \to D_s^- X \ell^+ $ and $B_s \to D_s^{*-} X \ell^+ $, where $X$ denotes a final state that may consist of additional hadrons or photons and $\ell$ is an electron or muon. The studied $B_s$ decays are contained in the $121.4~{\rm fb}^{-1}$ $ (5S)$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The branching fractions of the decays are measured to be $\mathcal{B}(B_s \to D_s^- X \ell^+ ) = [8.2 \pm 0.2 (\text{stat}) \pm 0.6 (\text{syst}) \pm 1.4 (\text{ext})]\%$ and $\mathcal{B}(B_s \to D_s^{*-} X \ell^+ ) = [5.4 \pm 0.4 (\text{stat}) \pm 0.4 (\text{syst}) \pm 0.9 (\text{ext})]\%$, where the first two uncertainties are statistical and systematic and the last is due to external parameters. The measurement also provides an estimate of the $B_s^{(*)}\bar{B}_s^{(*)}$ production cross-section, $ (e^+e^- \to B_s^{(*)}\bar{B}_s^{(*)}) = (53.8 \pm 1.4 (\text{stat}) \pm 4.0 (\text{syst}) \pm 3.4 (\text{ext}))\,{\rm pb}$, at the center-of-mass energy $\sqrt{s} = 10.86\,{\rm GeV}$. 13 pages, 2 figures, submitted to Phys. Rev. D
出版者： American Physical Society (APS)
出版日期： 2015-10-22
出處： Physical Review D, 2015-10, Vol.92 (7)
識別號： ISSN: 1550-7998
識別號： DOI: 10.1103/physrevd.92.072013
識別號： DOI: 10.48550/arxiv.1504.02004 |
| 顯示於類別: | [物理學系] 期刊論文
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