Beauty mesons in lattice QCD with exact chiral symmetry

We present the first study of treating b, c, and s quarks as Dirac fermions in quenched lattice QCD with exact chiral symmetry. For 100 gauge configurations generated with single-plaquette action at beta = 7.2 on the 323 x 60 lattice, we compute point-to-point quark propagators for 33 quark masses in the range 0.01 <=, m(q)a <=, 0.85, and measure the time-correlation function of (pseudo-)scalar, (pseudo-)vector, and tensor mesons, for symmetric and asymmetric quark masses respectively. The lowest-lying mass spectra of mesons with quark contents b (b) over bar, c (b) over bar, s (b) over bar, and a are determined, together with the pseudoscalar decay constants. Our results are summarized in the tables. Furthermore, we also determine the b and c quark masses, m(b)((MS) over bar)(m(b)) = 4.65(5) GeV, m(c)((MS) over bar)(m(c)) = 1.16(4) GeV. (c) 2007 Elsevier BX All rights reserved.