A search for the rare decays B 0 s → μ+μ− and B0 → μ+μ− is performed in pp collisions at s √ =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.

S. CHATRCHYAN, V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, et al. (2012). Search for B-S(0) -> mu(+)mu(-) and B-0 -> mu(+)mu(-) decays. JOURNAL OF HIGH ENERGY PHYSICS, 4, 33-1-33-36 [10.1007/JHEP04(2012)033].

Search for B-S(0) -> mu(+)mu(-) and B-0 -> mu(+)mu(-) decays

BONACORSI, DANIELE;BRAIBANT, SYLVIE;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;PRIMAVERA, FEDERICA;ROSSI, ANTONIO MARIA;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;GUIDUCCI, LUIGI;BRIGLIADORI, LUCA
2012

Abstract

A search for the rare decays B 0 s → μ+μ− and B0 → μ+μ− is performed in pp collisions at s √ =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.
2012
S. CHATRCHYAN, V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, et al. (2012). Search for B-S(0) -> mu(+)mu(-) and B-0 -> mu(+)mu(-) decays. JOURNAL OF HIGH ENERGY PHYSICS, 4, 33-1-33-36 [10.1007/JHEP04(2012)033].
S. CHATRCHYAN; V. KHACHATRYAN; A.M. SIRUNYAN; A. TUMASYAN; W. ADAM; T. BERGAUER; M. DRAGICEVIC; J. ER .A N(O; C. FABJAN; M. FRIEDL; R. FRUHWIRTH; V.M....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/122045
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