Angular analysis of charged and neutral $B\to K{\mu }^{+}{\mu }^{-}$ decays

Abstract

The angular distributions of the rare decays $B^{+}\to K^{+}{\mu }^{+}{\mu }^{-}$ and $B^0\to K_{\mathrm{S}}^0{\mu }^{+}{\mu }^{-}$ 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, $F_{\mathrm{H}}$ and the forward-backward asymmetry of the dimuon system $A_{\mathrm{FB}}$, which are determined in bins of the dimuon mass squared. The parameter $F_{\mathrm{H}}$ is a measure of the contribution from (pseudo)scalar and tensor amplitudes to the decay width. The measurements of $A_{\mathrm{FB}}$ and $F_{\mathrm{H}}$ reported here are the most precise to date and are compatible with predictions from the Standard Model.

27 pages, 11 figures, 2 tables. Updated to correspond to JHEP proofs

References in corpus (4)

• PYTHIA 6.4 Physics and Manual
• Measurement of the Differential Branching Fraction and Forward-Backword Asymmetry for B->K(*)l+l-
• Angular Distributions of B -> K ll Decays
• New observables in the decay mode anti-B --> anti-K*0 l+ l-

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