Test of Lepton Universality in b→sℓ^{+}ℓ^{-} Decays

LHCb Collaboration

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Resum

The first simultaneous test of muon-electron universality using B^{+}→K^{+}ℓ^{+}ℓ^{-} and B^{0}→K^{*0}ℓ^{+}ℓ^{-} decays is performed, in two ranges of the dilepton invariant-mass squared, q^{2}. The analysis uses beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9  fb^{-1}. Each of the four lepton universality measurements reported is either the first in the given q^{2} interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model.

Idioma originalAnglès
Número d’article051803
Pàgines (de-a)51803
Nombre de pàgines1
RevistaPhysical Review Letters
Volum131
Número5
DOIs
Estat de la publicacióPublicada - 4 d’ag. 2023

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