Phys. Rev. D 64, 094501 (2001) [19 pages]Standard model matrix elements for neutral B-meson mixing and associated decay constantsReceived 11 December 2000; published 27 September 2001 We present results of quenched lattice calculations of the matrix elements relevant for Bd-Bd and Bs-Bs mixing in the standard model. Results for the corresponding SU(3)-breaking ratios, which can be used to constrain or determine |Vtd|, are also given. The calculations are performed at two values of the lattice spacing, corresponding to β=6.0 and β=6.2, with quarks described by a mean-field-improved Sheikholeslami-Wohlert action. As a by-product, we obtain the leptonic decay constants of B and D mesons. We also present matrix elements relevant for D0-D0 mixing. Our results are summarized in the Introduction. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.64.094501
DOI:
10.1103/PhysRevD.64.094501
PACS:
12.38.Gc, 12.15.Hh, 14.40.Nd
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