B_s → D^(*)_s form factors from lattice QCD with N_f=2 Wilson-clover quarks

2021/11/10 by B. Blossier, Blossier, Benoît, Pierre Henri Cahue +9
Physics and Astronomy · #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #High-Energy Particle Collisions Research

paper · doi:10.48550/arxiv.2111.05733

Abstract

We report on a two-flavour lattice QCD determination of the B_s→ D_s and B_s→ D_s^* transitions, which in the heavy quark limit can be parameterised by the form factors G, and h_{\text A1}, h_{\text A2} and h_{\text A3}. In the search of New Physics through tests of lepton-flavour universality, B_s decay channels are complementary to B decays and widely studied at B factories and LHCb. The purpose of our study is to explore a suitable method to extract form factors associated with b→ c currents from lattice QCD. In particular, we present numerical results for G and h_{\text A1}.

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