We compute on the lattice the ``bag'' parameters of the five ΔB = 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.
B-parameters of the complete set of matrix elements of DB = 2 operators from the lattice / Becirevic, D.; Gimenez, V.; Martinelli, Guido; Papinutto, M.; Reyes, J.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 4(2002), pp. 1-26. [10.1088/1126-6708/2002/04/025]
B-parameters of the complete set of matrix elements of DB = 2 operators from the lattice
Martinelli, Guido;
2002-01-01
Abstract
We compute on the lattice the ``bag'' parameters of the five ΔB = 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
