The angular distributions of the rare decays B+ → K+ μ+ μ− and B0 → K0S μ+ μ− are studied with data corresponding to 3 fb^−1 of integrated luminosity, collected in proton-proton collisions at 7 and 8 TeV centre-of-mass energies with the LHCb detector. The angular distribution is described by two parameters, F_H and the forward-backward asymmetry of the dimuon system A_FB, which are determined in bins of the dimuon mass squared. The parameter F_H is a measure of the contribution from (pseudo)scalar and tensor amplitudes to the decay width. The measurements of A_FB and F_H reported here are the most precise to date and are compatible with predictions from the Standard Model.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. (2014). Angular Analysis of Charged and Neutral B → K μ+ μ− Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2014(5), 0-24 [10.1007/JHEP05(2014)082].

Angular Analysis of Charged and Neutral B → K μ+ μ− Decays

CARBONE, ANGELO;GALLI, DOMENICO;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

Abstract

The angular distributions of the rare decays B+ → K+ μ+ μ− and B0 → K0S μ+ μ− are studied with data corresponding to 3 fb^−1 of integrated luminosity, collected in proton-proton collisions at 7 and 8 TeV centre-of-mass energies with the LHCb detector. The angular distribution is described by two parameters, F_H and the forward-backward asymmetry of the dimuon system A_FB, which are determined in bins of the dimuon mass squared. The parameter F_H is a measure of the contribution from (pseudo)scalar and tensor amplitudes to the decay width. The measurements of A_FB and F_H reported here are the most precise to date and are compatible with predictions from the Standard Model.
2014
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. (2014). Angular Analysis of Charged and Neutral B → K μ+ μ− Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2014(5), 0-24 [10.1007/JHEP05(2014)082].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alve...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/298130
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