Search for B-s(0) -> mu(+)mu(-) and B-0 -> mu(+)mu(-) Decays in pp Collisions at root s=7 TeV


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Chatrchyan S., Khachatryan V., Sirunyan A. M. , Tumasyan A., Adam W., Bergauer T., ...More

PHYSICAL REVIEW LETTERS, vol.107, no.19, 2011 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 107 Issue: 19
  • Publication Date: 2011
  • Doi Number: 10.1103/physrevlett.107.191802
  • Title of Journal : PHYSICAL REVIEW LETTERS

Abstract

A search for the rare decays B-s(0) --> mu(+)mu(-) and B-0 --> mu(+)mu(-) is performed in pp collisions at root 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 B(B-s(0) --> mu(+)mu(-)) < 1.9 x 10(-8) and B(B-0 --> mu(+)mu(-)) < 4.6 x 10(-9), at 95% confidence level.