B_s Mesons using Staggered Light Quarks

TL;DR

This paper reports on lattice QCD simulations of B_s mesons using staggered light quarks and nonrelativistic heavy quarks, presenting initial results on mass splittings and decay constants with plans for further computations.

Contribution

It introduces a novel approach combining staggered light quarks with nonrelativistic heavy quarks for heavy-light meson simulations and provides initial lattice results.

Findings

Results for B_s kinetic mass and hyperfine splitting

Initial decay constant estimates for B_s mesons

Progress on simulations with MILC lattices

Abstract

Last year we proposed using staggered fermions as the light quarks, combined with nonrelativistic heavy quarks, in simulations of heavy-light mesons. A first round of tests which focuses on the B_s meson has been completed using quenched lattices, and results are presented here for the kinetic B_s mass, the B_s^* - B_s splitting, and f_{B_s}. The next project, already underway, is to compute the B and B_s decay constants and spectra on the n_f = 2+1 and 3 MILC lattices. We report on progress with one set of these configurations.