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Search for B 0 s →μ + μ − and B 0 →μ + μ − decays

By Serguei Chatrchyan, Barbara Clerbaux, Gilles De Lentdecker, Arnaud Gay, Tomas Hreus, Alexandre Leonard, Pierre Marage, Thomas Reis, Laurent Thomas, Catherine Vander Velde, Pascal Vanlaer, Othman Charaf and Vincent Dero

Abstract

A search for the rare decays B 0 s → μ +μ - and B 0 → μ + μ - is performed in pp collisions at ps = 7TeV, with a data sample corresponding to an integrated luminosity of 5 fb -1 collected by the CMS experiment at the LHC. In both decays, the number of events observed after all selection requirements is consistent with the expectation from background plus standard model signal predictions. The resulting upper limits on the branching fractions are B(B 0 s → μ + μ-) < 7:7 × 10 -9 and B(B 0 → μ +μ -) < 1:8 × 10 -9 at 95% confidence level.0CMS Collaborationinfo:eu-repo/semantics/publishe

Topics: Physique des particules élémentaires
Publisher: 'Springer Science and Business Media LLC'
Year: 2012
DOI identifier: 10.1007/JHEP04(2012)033
OAI identifier: oai:dipot.ulb.ac.be:2013/141362
Provided by: DI-fusion
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