B parameters of the complete set of matrix elements of delta B = 2 operators from the lattice

Oct, 2001
27 pages
Published in:
  • JHEP 04 (2002) 025
e-Print:
Report number:
  • IFUP-TH-2001-32,
  • FTUV-IFIC-01-0927,
  • ROMA-1323-01

Citations per year

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Abstract:
We compute on the lattice the ``bag'' parameters of the five (Delta B = 2) operators of the supersymmetric basis, by combining their values determined in full QCD and in the static limit of HQET. The extrapolation of the QCD results from the accessible heavy-light meson masses to the B-meson mass is constrained by the static result. The matching of the corresponding results in HQET and in QCD is for the first time made at NLO accuracy in the MSbar(NDR) renormalization scheme. All results are obtained in the quenched approximation.
  • lattice field theory: B-parameter
  • gauge field theory: SU(3)
  • supersymmetry
  • HQET model
  • meson: mass
  • B: mass
  • renormalization
  • approximation: quenching
  • numerical calculations: Monte Carlo