Test of lepton universality using B+ →k+l+l- decays

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Date

2014

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Publisher

American Physical Society

Abstract

A measurement of the ratio of the branching fractions of the B+→K+μ+μ- and B+→K+e+e- decays is presented using proton-proton collision data, corresponding to an integrated luminosity of 3.0fb-1, recorded with the LHCb experiment at center-of-mass energies of 7 and 8 TeV. The value of the ratio of branching fractions for the dilepton invariant mass squared range 1<q2<6GeV2/c4 is measured to be 0.745-0.074+0.090(stat)±0.036(syst). This value is the most precise measurement of the ratio of branching fractions to date and is compatible with the standard model prediction within 2.6 standard deviations. © Published by the American Physical Society.

Description

Keywords

Atomic physics , Physics , Branching fractions , Center-of-mass energies , Integrated luminosity , Invariant mass , Precise measurements , Proton proton collisions , Standard deviation , The standard model , Tellurium compounds

Citation

URI

http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/16755

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