Precise,, andmeson spectroscopy from full lattice QCD
Open Access
- 19 January 2011
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 83 (1)
- https://doi.org/10.1103/physrevd.83.014506
Abstract
We give the first accurate results for B and Bs meson masses from lattice QCD including the effect of u, d, and s sea quarks, and we improve an earlier value for the Bc meson mass. By using the highly improved staggered quark (HISQ) action for u/d, s, and c quarks and NRQCD for the b quarks, we are able to achieve an accuracy in the masses of around 10~MeV. Our results are: mB=5.291(18)\,\,GeV, mBs=5.363(11)\,\,GeV, and mBc=6.280(10)\,\,GeV. Note that all QCD parameters here are tuned from other calculations, so these are parameter free-tests of QCD against experiment. We also give scalar, Bs0* and axial-vector, Bs1 meson masses. We find these to be slightly below threshold for decay to BK and B*K, respectively.Keywords
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