First observations of the rare decays B+ → K+π+π-μ+μ- and B+ → φK+μ+μ- are presented using data corresponding to an integrated luminosity of 3.0 fb-1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8TeV. The branching fractions of the decays are (Formula Presented.) where the uncertainties are statistical, systematic, and due to the uncertainty on the branching fractions of the normalisation modes. A measurement of the differential branching fraction in bins of the invariant mass squared of the dimuon system is also presented for the decay B+ → K+π+π-μ+μ-. © CERN.

First observations of the rare decays B+ → K+π+π-μ+μ- and B+ → φK+μ+μ-

PALANO, Antimo;PAPPAGALLO, MARCO IGNAZIO;
2014

Abstract

First observations of the rare decays B+ → K+π+π-μ+μ- and B+ → φK+μ+μ- are presented using data corresponding to an integrated luminosity of 3.0 fb-1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8TeV. The branching fractions of the decays are (Formula Presented.) where the uncertainties are statistical, systematic, and due to the uncertainty on the branching fractions of the normalisation modes. A measurement of the differential branching fraction in bins of the invariant mass squared of the dimuon system is also presented for the decay B+ → K+π+π-μ+μ-. © CERN.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11586/179670
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