Strong Constraints on the Rare Decays Bs0→μ+μ- and B0→μ+μ-

The LHCb Collaboration; Matthew Needham; Franz Muheim; Peter Clarke; Yuehong Xie; Stephan Eisenhardt

doi:10.1103/PhysRevLett.108.231801

Strong Constraints on the Rare Decays B_s⁰→μ⁺μ^- and B⁰→μ⁺μ^-

The LHCb Collaboration, Matthew Needham, Franz Muheim, Peter Clarke, Yuehong Xie, Stephan Eisenhardt

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

A search for B_s⁰→μ⁺μ^- and B⁰→μ⁺μ^- decays is performed using 1.0 fb^-1 of pp collision data collected at √s=7 TeV with the LHCb experiment at the Large Hadron Collider. For both decays, the number of observed events is consistent with expectation from background and standard model signal predictions. Upper limits on the branching fractions are determined to be B(B_s⁰→μ⁺μ^-)<4.5(3.8)×10^-9 and B(B⁰→μ⁺μ^-)<1.0(0.81)×10^-9 at 95% (90%) confidence level.

Original language	English
Article number	231801
Number of pages	8
Journal	Physical Review Letters
Volume	108
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.108.231801
Publication status	Published - 8 Jun 2012

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Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2012 CERN, for the LHCb Collaboration
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title = "Strong Constraints on the Rare Decays Bs0→μ+μ- and B0→μ+μ-",

abstract = "A search for Bs0→μ+μ- and B0→μ+μ- decays is performed using 1.0 fb-1 of pp collision data collected at √s=7 TeV with the LHCb experiment at the Large Hadron Collider. For both decays, the number of observed events is consistent with expectation from background and standard model signal predictions. Upper limits on the branching fractions are determined to be B(Bs0→μ+μ-)<4.5(3.8)×10-9 and B(B0→μ+μ-)<1.0(0.81)×10-9 at 95% (90%) confidence level.",

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AU - Clarke, Peter

AU - Xie, Yuehong

AU - Eisenhardt, Stephan

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