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- W98972852 abstract "The present status of the theoretical estimates of the difference between the widths of the neutral Bs-mesons and of the B-meson lifetime ratios is reviewed. In particular, the lattice results for the matrix elements of the relevant (delta B=2)-operators are updated and the first lattice QCD results for the matrix elements of (delta B=0)-operators are presented. In both cases, the NLO perturbative QCD corrections in the coefficient functions have been included. The theoretically updated results are: (delta Gamma/Gamma)_{Bs} = (7 +/- 4) %, tau(B+)/tau(Bd) = 1.07(3) and tau(Bs)/tau(Bd) = 1.00(2)." @default.
- W98972852 created "2016-06-24" @default.
- W98972852 creator A5074080648 @default.
- W98972852 date "2001-10-09" @default.
- W98972852 modified "2023-09-27" @default.
- W98972852 title "Theoretical progress in describing the B-meson lifetimes" @default.
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- W98972852 hasPublicationYear "2001" @default.
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