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.
Search for B(s)(0) -> mu(+)mu(-) and B(0) -> mu(+)mu(-) Decays in pp Collisions at root s=7 TeV
AMAPANE, Nicola Carlo;ARGIRO', Stefano;BOTTA, CRISTINA;CASTELLO, Roberto;COSTA, Marco;MIGLIORE, Ernesto;MONACO, Vincenzo;MUSICH, MARCO;OBERTINO, Maria Margherita;PELLICCIONI, Mario;ROMERO, Alessandra;SACCHI, Roberto;SOLA, VALENTINA;SOLANO, Ada Maria;BELLAN, Riccardo;COVARELLI, Roberto;
2011-01-01
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.File in questo prodotto:
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