Precise B, Bs, and Bc meson spectroscopy from full lattice QCD

Eric Gregory, Christine Davies, Iain Kendall, Jonna Koponen, Kit Wong, Eduardo Follana, Elvira Gamiz, Peter Lepage, Eike Müller, Heechang Na, Junko Shigemitsu

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70 Citations (SciVal)

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, B∗s0 and axial-vector, Bs1 meson masses. We find these to be slightly below threshold for decay to BK and B∗K, respectively.
Original languageEnglish
Number of pages14506
JournalPhysical Review D
Volume83
Issue number1
DOIs
Publication statusPublished - 19 Jan 2011

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