Speaker
Anastasia Boushmelev
(University of Siegen)
Description
Semileptonic $B_{(s)}$ decays are of great phenomenological interest because they allow to extract CKM matrix elements or test lepton flavor universality. Taking advantage of existing data, we explore extracting form factors for vector final states using the narrow width approximation. Based on RBC-UKQCD's set of 2+1 flavor gauge field ensembles with Shamir domain-wall fermion and Iwasaki gauge field action, we study semileptonic $B_{(s)}$ decays using unitary light and strange quarks, Möbius domain wall fermions for charm quarks, and bottom quarks simulated with the relativistic heavy quark (RHQ) action. Exploratory results for $B_s \to D_s^* \ell \nu_\ell$ are presented.
Primary author
Anastasia Boushmelev
(University of Siegen)
Co-authors
Matthew Black
(University Siegen)
Oliver Witzel
(Universität Siegen)
