$B_s\to D_s^{(\ast )}l\nu$ Form Factors with Heavy HISQ Quarks

Abstract

We present progress on an ongoing calculation of the $B_s\to D_s^{(\ast )}l\nu$ form factors calculated on the $n_f=2+1+1$ MILC ensembles and using the Highly Improved Staggered Quark action for all valence quarks. We perform the calculation at a range of $b$ quark masses (and lattice spacings) so that we can extrapolate to the physical $b$-quark mass.

Comments: 6 pages, 3 figures, proceedings of the 36th Annual International Symposium on Lattice Field Theory - LATTICE2018