Bs and Bc mesons in lattice QCD with exact chiral symmetry

Details Bs and Bc mesons in lattice QCD with exact chiral symmetry Bs and Bc mesons in lattice QCD with exact chiral symmetry

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006slft.confe.180h&link_type=abstract

Proceedings of the XXIVth International Symposium on Lattice Field Theory. July 23-28, 2006, Tucson, Arizona., p.180.1

Computer Science

Scientific paper

We determine the masses and decay constants of the pseudoscalar mesons Bs and Bc , and also the masses of the vector mesons B∗ and B∗ , in quenched lattice QCD with exact chiral symmetry. For s c 100 gauge configurations generated with single-plaquette action at β = 7.2 on the 323 ×60 lattice, we compute point-to-point quark propagators for 33 quark masses in the range 0.01 ≤ mq a ≤ 0.85, and measure the time-correlation functions of pseudoscalar and vector mesons. The inverse lattice spacing and the charm quark bare mass are determined using the mass and decay constant of ηc (2980). The bare masses of s and b quarks are chosen such that the masses of the corresponding vector mesons are in good agreement with φ (1020), and ϒ(9460) respectively. Our preliminary results are: mBs = 5385(27) MeV, fBs = 253(8) MeV, mBc = 6278(6) MeV, fBc = 489(4) MeV, mB∗ = 5409(29) MeV, and mB∗ = 6315(6) MeV. s c

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