Leptonic decays of $B_{(s)}$ and $D_{(s)}$ using the OK action

Abstract

We present recent progress in the lattice calculation of leptonic decay constants for $B_{(s)}$ and $D_{(s)}$ mesons using the Oktay-Kronfeld (OK) action for charm and bottom valence quarks, whose masses are tuned non-perturbatively. The calculations are done on 6 HISQ ensembles generated by the MILC collaboration with $N_f=2+1+1$ flavors. We also use the HISQ action for the light spectator quarks. Results are presented for the ratios $f_{B_s}/f_B$ and $f_{D_s}/f_D$, which reflect $SU(3)$ flavor symmetry breaking, and are independent of the renormalization constants of the axial currents.

7 pages, 10 figures, Lattice 2019 proceeding

References in corpus (3)

• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• New lattice action for heavy quarks
• Controlling Excited-State Contamination in Nucleon Matrix Elements