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
GALANTI, MARIO;BELLAN, PAOLO;BISELLO, DARIO;BRANCA, ANTONIO;CARLIN, ROBERTO;GASPARINI, FABRIZIO;GASPARINI, UGO;GOZZELINO, ANDREA;MARGONI, MARTINO;MENEGUZZO, ANNA TERESA;NESPOLO, MASSIMO;PERROZZI, LUCA;POZZOBON, NICOLA;RONCHESE, PAOLO;SIMONETTO, FRANCO;TOSI, MIA;VANINI, SARA;ZOTTO, PIERLUIGI;ZUMERLE, GIANNI;M. Grassi;ROSSIN, ROBERTO;A. Gaz;
2011
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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