The angular distribution of the flavor-changing neutral current decay B+ → K+μ+μ- is studied in proton-proton collisions at a center-of-mass energy of 8 TeV. The analysis is based on data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5 fb-1. The forward-backward asymmetry A_FB of the dimuon system and the contribution F_H from the pseudoscalar, scalar, and tensor amplitudes to the decay width are measured as a function of the dimuon mass squared. The measurements are consistent with the standard model expectations.
Angular analysis of the decay B+ →K+ μ+ μ- in proton-proton collisions at √s =8 TeV
Ravera, F.;Meridiani, P.;Amapane, N.;Argiro, S.;Bellan, R.;Costa, M.;Covarelli, R.;Kiani, B.;Migliore, E.;Monaco, V.;Monteil, E.;Obertino, M. M.;Pacher, L.;Pinna Angioni, G. L.;Romero, A.;Sacchi, R.;Sola, V.;Solano, A.;Soldi, D.;Rumerio, P.;
2018-01-01
Abstract
The angular distribution of the flavor-changing neutral current decay B+ → K+μ+μ- is studied in proton-proton collisions at a center-of-mass energy of 8 TeV. The analysis is based on data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5 fb-1. The forward-backward asymmetry A_FB of the dimuon system and the contribution F_H from the pseudoscalar, scalar, and tensor amplitudes to the decay width are measured as a function of the dimuon mass squared. The measurements are consistent with the standard model expectations.File in questo prodotto:
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