Tests of lepton universality in B0 → K0S ℓ+ ℓ− and B+ → K*+ ℓ+ ℓ− decays where ℓ is either an electron or a muon are presented. The differential branching fractions of B0 → K0S e+ 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 → K0S e+ e− and B+ → K*+ e+ e− decays is reported.

Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2022). Tests of Lepton Universality Using B0 → K0S ℓ+ ℓ− and B+ → K*+ ℓ+ ℓ− Decays. PHYSICAL REVIEW LETTERS, 128(19), 1-15 [10.1103/PhysRevLett.128.191802].

Tests of Lepton Universality Using B0 → K0S ℓ+ ℓ− and B+ → K*+ ℓ+ ℓ− Decays

Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Maccolini, S.;Manuzzi, D.;Patrignani, C.;Villa, A.;Zucchelli, S.;
2022

Abstract

Tests of lepton universality in B0 → K0S ℓ+ ℓ− and B+ → K*+ ℓ+ ℓ− decays where ℓ is either an electron or a muon are presented. The differential branching fractions of B0 → K0S e+ 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 → K0S e+ e− and B+ → K*+ e+ e− decays is reported.
2022
Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2022). Tests of Lepton Universality Using B0 → K0S ℓ+ ℓ− and B+ → K*+ ℓ+ ℓ− Decays. PHYSICAL REVIEW LETTERS, 128(19), 1-15 [10.1103/PhysRevLett.128.191802].
Aaij, R.; Abdelmotteleb, A.S.W.; Abellán Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C.A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/900414
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