The first simultaneous test of muon-electron universality using B+→K+ℓ+ℓ- and B0→K∗0ℓ+ℓ- decays is performed, in two ranges of the dilepton invariant-mass squared, q2. 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 q2 interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model. © 2023 CERN.

Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Test of Lepton Universality in b →sℓ+ℓ- Decays. PHYSICAL REVIEW LETTERS, 131(5) [10.1103/PhysRevLett.131.051803].

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

Archilli, F.;Santovetti, E.;
2023-01-01

Abstract

The first simultaneous test of muon-electron universality using B+→K+ℓ+ℓ- and B0→K∗0ℓ+ℓ- decays is performed, in two ranges of the dilepton invariant-mass squared, q2. 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 q2 interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model. © 2023 CERN.
2023
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01
English
Con Impact Factor ISI
Flavor changing neutral currents; Leptonic, semileptonic & radiative decays; Rare decays; Bottom mesons; Electrons; Muons; Hadron colliders
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85168336384&doi=10.1103/PhysRevLett.131.051803&partnerID=40&md5=793dbc4fcd1545706682b88be4525e48
Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Test of Lepton Universality in b →sℓ+ℓ- Decays. PHYSICAL REVIEW LETTERS, 131(5) [10.1103/PhysRevLett.131.051803].
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