%0 Journal Article
%T Test of lepton universality using B+ -> K(+)l(+)l(-) decays
%A LHCb Collaboration (Aaij, R. et al
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Ruiz Valls, P.
%A Sanchez Mayordomo, C.
%J Physical Review Letters
%D 2014
%V 113
%N 15
%I Amer Physical Soc
%@ 0031-9007
%G English
%F LHCbCollaborationAaij_etal2014
%O WOS:000344245600001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1999), last updated on Fri, 05 Dec 2014 15:35:28 +0000
%X A measurement of the ratio of the branching fractions of the B+ -> K+mu(+)mu(-) and B+ -> 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 TeV. The value of the ratio of branching fractions for the dilepton invariant mass squared range 1 < q(2) < 6 GeV2/c(4) 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.
%R 10.1103/PhysRevLett.113.151601
%U http://arxiv.org/abs/1406.6482
%U https://doi.org/10.1103/PhysRevLett.113.151601
%P 151601 - 10pp