A search for the rare decays Bs0→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 B(Bs0→μ+μ-)<1.9×10-8 and B(B0→μ+μ-)<4.6×10-9, at 95% confidence level.

S. CHATRCHYAN, V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, et al. (2011). Search for B0s->mu+mu- and B0->mu+mu- decays in pp collisions at sqrt(s)=7 TeV. PHYSICAL REVIEW LETTERS, 107, 191802-1-191802-15 [10.1103/PhysRevLett.107.191802].

Search for B0s->mu+mu- and B0->mu+mu- decays in pp collisions at sqrt(s)=7 TeV

BONACORSI, DANIELE;BRAIBANT, SYLVIE;BRIGLIADORI, LUCA;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;PRIMAVERA, FEDERICA;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;GUIDUCCI, LUIGI;
2011

Abstract

A search for the rare decays Bs0→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 B(Bs0→μ+μ-)<1.9×10-8 and B(B0→μ+μ-)<4.6×10-9, at 95% confidence level.
2011
S. CHATRCHYAN, V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, et al. (2011). Search for B0s->mu+mu- and B0->mu+mu- decays in pp collisions at sqrt(s)=7 TeV. PHYSICAL REVIEW LETTERS, 107, 191802-1-191802-15 [10.1103/PhysRevLett.107.191802].
S. CHATRCHYAN; V. KHACHATRYAN; A.M. SIRUNYAN; A. TUMASYAN; W. ADAM; T. BERGAUER; M. DRAGICEVIC; J. ER N(O; C. FABJAN; M. FRIEDL; R. FRUHWIRTH; V.M. GH...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/118068
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