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29 March 2024
 
  » arxiv » hep-ph/0011086

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Standard Model Matrix Elements for Neutral B-Meson Mixing and Associated Decay Constants
UKQCD Collaboration: Laurent Lellouch ; C.-J. David Lin ;
Date 8 Nov 2000
Journal Phys.Rev. D64 (2001) 094501
Subject hep-ph hep-ex hep-lat
AffiliationLAPTH, Annecy and CPT, Marseille) and C.-J. David Lin (Southampton U.
AbstractWe present results of quenched lattice calculations of the matrix elements relevant for B_d-ar B_d and B_s-ar B_s mixing in the Standard Model. Results for the corresponding SU(3)-breaking ratios, which can be used to constrain or determine |V_{td}|, are also given. The calculations are performed at two values of the lattice spacing, corresponding to eta = 6.0 and eta = 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 D^0-ar D^0 mixing. Our results are summarized in the Introduction.
Source arXiv, hep-ph/0011086
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