Form factors for ${\mathrm{B}}_{\mathrm{s}}\to \mathrm{K}\ell \nu$ decays in Lattice QCD

Felix Bahr, Fabio Bernardoni, John Bulava +4

We present the current status of the computation of the form factor $f_{+}(q^2)$ for the semi-leptonic decay ${\mathrm{B}}_{\mathrm{s}}\to \mathrm{K}\ell \nu$ by the ALPHA collaboration. W…