Volume 363 - 37th International Symposium on Lattice Field Theory (LATTICE2019) - Main session
Leptonic decays of $B_{(s)}$ and $D_{(s)}$ using the OK action
B.J. Choi,* S. Park, T. Bhattacharya, R. Gupta, Y.C. Jang, S. Jwa, S. Lee, W. Lee, J. Leem on behalf of LANL/SWME Collaboration
*corresponding author
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Pre-published on: February 19, 2020
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Abstract
We present recent progress in the lattice calculation ofleptonic 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.
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