Extraction of bare Form Factors for ${\mathrm{B}}_{\mathrm{s}}\to \mathrm{K}\ell \nu$ Decays in non-perturbative HQET

Felix Bahr, Debasish Banerjee, Fabio Bernardoni +3

We discuss the extraction of the ground state $⟨\mathrm{K}(\mathbf{p})|V_{\mu }(0)|\mathrm{B}(0)⟩$ matrix elements from Euclidean lattice correlation functions. The em…