Mass of the B_c Meson in Three-Flavor Lattice QCD

Abstract

We use lattice QCD to predict the mass of the $B_c$ meson. We use the MILC Collaboration's ensembles of lattice gauge fields, which have a quark sea with two flavors much lighter than a third. Our final result is $m_{B_c}=6304\pm 12_{-0}^{+18}MeV$. The first error bar is a sum in quadrature of statistical and systematic uncertainties, and the second is an estimate of heavy-quark discretization effects.

arXiv comment4 pages, 3 figures; shorten to fit in PRL; published version

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