https://scholars.lib.ntu.edu.tw/handle/123456789/606725
標題: | Measurement of B (Bs →dsX) with Bs semileptonic tagging | 作者: | Wang B WEI-SHU HOU et al. |
公開日期: | 2022 | 卷: | 105 | 期: | 1 | 來源出版物: | Physical Review D | 摘要: | 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→DsX?ν, where X denotes unreconstructed additional hadrons or photons and ? 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. ? 2022 authors. Published by the American Physical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123822876&doi=10.1103%2fPhysRevD.105.012004&partnerID=40&md5=7b83c67b0689805642684d1ad4eaf4c9 https://scholars.lib.ntu.edu.tw/handle/123456789/606725 |
ISSN: | 24700010 | DOI: | 10.1103/PhysRevD.105.012004 |
顯示於: | 物理學系 |
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