Alberto Luridiana

Test of Lepton Flavor Universality with Bs0→ϕℓ+ℓ− Decays

De Angelis, C.;Dettori, F.;Fabiano, F.;Manca, G.;Oldeman, R.;Provenzano, D.;Saitta, B.;
2025-01-01

Abstract

Lepton flavor universality in rare b → s transitions is tested for the first time using B0 s meson decays. The measurements are performed using pp collision data collected by the LHCb experiment between 2011 and 2018, corresponding to a total integrated luminosity of 9 fb−1. Branching fraction ratios between the B0 s → ϕeþe− and B0 s → ϕμþμ− decays are measured in three regions of dilepton mass squared, q2, with 0.1 < q2 < 1.1, 1.1 < q2 < 6.0, and 15 < q2 < 19 GeV2=c4. The results agree with the standard model expectation of lepton flavor universality.
2025
Inglese
134
12
Esperti anonimi
scientifica
Aaij, R.; Abdelmotteleb, A.  s.  w.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adefisoye, A.  a.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Agapop ...espandi
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
1149
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