Tests of lepton universality in B0?KS0„“+“- and B+?K*+“+“- decays where“ is either an electron or a muon are presented. The differential branching fractions of B0?KS0e+e- and B+?K*+e+e- decays are measured in intervals of the dilepton invariant mass squared. The measurements are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. The results are consistent with the standard model and previous tests of lepton universality in related decay modes. The first observation of B0?KS0e+e- and B+?K*+e+e- decays is reported.

Aaij, R., Abdelmotteleb, A., Beteta, A., Abudinen, F., Ackernley, T., Adeva, B., et al. (2022). Tests of Lepton Universality Using B0 ? KS0 â„“+â„“- and B+ ?k*+â„“+â„“- Decays. PHYSICAL REVIEW LETTERS, 128(19) [10.1103/PhysRevLett.128.191802].

Tests of Lepton Universality Using B0 ? KS0 â„“+â„“- and B+ ?k*+â„“+â„“- Decays

Borsato M.;Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Gotti C.;Martinazzoli L.;Martinelli M.;Meloni S.;Minotti A.;Petruzzo M.;Pizzichemi M.;Salomoni M.;Shields E. B.;
2022

Abstract

Tests of lepton universality in B0?KS0„“+“- and B+?K*+“+“- decays where“ is either an electron or a muon are presented. The differential branching fractions of B0?KS0e+e- and B+?K*+e+e- decays are measured in intervals of the dilepton invariant mass squared. The measurements are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. The results are consistent with the standard model and previous tests of lepton universality in related decay modes. The first observation of B0?KS0e+e- and B+?K*+e+e- decays is reported.
Articolo in rivista - Articolo scientifico
Particle Physics, Flavor Physics, Lepton Universality, B Meson Decays
English
11-mag-2022
2022
128
19
191802
open
Aaij, R., Abdelmotteleb, A., Beteta, A., Abudinen, F., Ackernley, T., Adeva, B., et al. (2022). Tests of Lepton Universality Using B0 ? KS0 â„“+â„“- and B+ ?k*+â„“+â„“- Decays. PHYSICAL REVIEW LETTERS, 128(19) [10.1103/PhysRevLett.128.191802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/396970
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