文章基本信息

标题：The search for the very rare decays B_(s,d)->mu+mu- at LHCb
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作者：J. SERRANO
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2011
卷号：2011
期号：EPS-HEP2011
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：A search for the Bs ! μ+μ− and Bd ! μ+μ− decays is presented using 300 pb−1 of pp collisions at p s = 7 TeV collected by the LHCb experiment at the Large Hadron Collider at CERN. The measured upper limit for the branching ratio of the Bs ! μ+μ− decay is B(Bs ! μ+μ−)< 1.3 (1.6)×10−8 at 90% (95 %) confidence level (CL), while in the case of the Bd ! μ+μ− decay the measured upper limit is B(Bd !μ+μ−)< 4.2 (5.1)×10−9 at 90% (95 %) CL. A combination with the 2010 dataset results inB(Bs!μ+μ−)<1.2 (1.5)×10−8 at 90% (95 %) CL.