Search for B0s →µ+µ- and B0→ µ+µ- Decays in pp Collisions at √s = 7 TeV

Authors

S. Chatrchyan, Yerevan Physics Institute, Yerevan, Armenia
Kenneth A. Bloom, University of Nebraska-LincolnFollow
S. Bose, University of Nebraska-LincolnFollow
Jamila Butt, University of Nebraska-Lincoln
Daniel R. Claes, University of Nebraska-LincolnFollow
Aaron Dominguez, University of Nebraska-LincolnFollow
Michael Eads, University of Nebraska-LincolnFollow
P. Jindal, University of Nebraska-Lincoln
J. Keller, University of Nebraska-LincolnFollow
T. Kelly, University of Nebraska-Lincoln
Ilya Kravchenko, University of Nebraska-LincolnFollow
J. Lazo-Flores, University of Nebraska-LincolnFollow
H. Malbouisson, University of Nebraska-Lincoln
Sudhir Malik, University of Nebraska-LincolnFollow
Gregory Snow, University of Nebraska-LincolnFollow

Date of this Version

2011

Citation

PHYSICAL REVIEW LETTERS 107, 191802 (2011); DOI: 10.1103/PhysRevLett.107.191802

Comments

Copyright 2011 CERN, for the CMS Collaboration

Abstract

A search for the rare decays B⁰_s →µ⁺µ^- and B⁰→ µ⁺µ^- is performed in pp collisions at √s = 7 TeV, with a data sample corresponding to an integrated luminosity of 1.14 fb^-1, collected by the CMS experiment at the LHC. In both cases, the number of events observed after all selection requirements is consistent with expectations from background and standard-model signal predictions. The resulting upper limits on the branching fractions are β(B⁰_s→µ⁺µ^-) < 1.9 X 10^-8 and β(B⁰→µ⁺µ^-) < 4.6 X 10^-9, at 95% confidence level.