Name: Giuseppe Gagliardi, "$B_s \to \mu^{+} \mu^{-}\gamma$ at large $q^{2}$ from lattice QCD"
Start: 2024-04-30T14:00:00+02:00
End: 2024-04-30T16:00:00+02:00
Location: IJCLab

Description

We present a first-principles lattice QCD calculation of the local form factors describing the $B_{s} \to μ^{+} μ^{-} γ$ decay. We focus on the region of large di-muon invariant masses $\sqrt{q^{2}} ≳ 4.2 G e V$ , where the contributions from the four-quarks operators in the effective weak Hamiltonian (which are neglected at present) are expected to be small. We use our results for the form factors to determine the branching fraction for $B_{s} \to μ^{+} μ^{-} γ$ , which has been recently measured by the LHCb in the region $\sqrt{q^{2}} > 4.9 G e V$ .

Giuseppe Gagliardi, " $B_{s} \to μ^{+} μ^{-} γ$ at large $q^{2}$ from lattice QCD"

210/1-114 - Salle des Séminaires

IJCLab

Giuseppe Gagliardi, "Bs→μ+μ−γ at large q2 from lattice QCD"

210/1-114 - Salle des Séminaires

IJCLab

Giuseppe Gagliardi, " $B_{s} \to μ^{+} μ^{-} γ$ at large $q^{2}$ from lattice QCD"