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Test of lepton universality using $B^{+}\rightarrow K^{+}\ell^{+}\ell^{-}$ decays

Abstract : A measurement of the ratio of the branching fractions of the $B^{+}\rightarrow K^{+}\mu^{+}\mu^{-}$ and $B^{+}\rightarrow K^{+}e^{+}e^{-}$ decays is presented using proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb$^{-1}$, recorded with the LHCb experiment at center-of-mass energies of 7 and 8 $\mathrm{\,Te\kern -0.1em V}$. The value of the ratio of branching fractions for the dilepton invariant mass squared range $1
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Submitted on : Friday, June 27, 2014 - 10:45:30 AM
Last modification on : Thursday, December 16, 2021 - 2:11:14 PM

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R. Aaij, Y. Amhis, S. Barsuk, M. Borsato, O. Callot, et al.. Test of lepton universality using $B^{+}\rightarrow K^{+}\ell^{+}\ell^{-}$ decays. Physical Review Letters, American Physical Society, 2014, 113, pp.151601. ⟨10.1103/PhysRevLett.113.151601⟩. ⟨in2p3-01015802⟩



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