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

LHCb Collaboration

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Resum

Lepton flavor universality in rare b→s transitions is tested for the first time using Bs0 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 Bs0→φe+e- and Bs0→φμ+μ- 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.

Idioma originalAnglès
Número d’article121803
RevistaPhysical Review Letters
Volum134
Número12
DOIs
Estat de la publicacióPublicada - 28 de març 2025

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