We calculate, in the continuum limit of quenched lattice QCD, the form factor that enters in the decay rate of the semileptonic decay B -> Dlv. Making use of the step scaling method (SSM), previously introduced to handle two scale problems in lattice QCD, and of flavour twisted boundary conditions we extract G(B -> D)(w) at finite momentum transfer and at the physical values of the heavy quark masses. Our results can be used in order to extract the CKM matrix element V-cb by the experimental decay rate without model dependent extrapolations. (c) 2007 Elsevier B.V. All rights reserved.

De Divitiis, G.M., Molinaro, E., Petronzio, R., & Tantalo, N. (2007). Quenched lattice calculation of the B -> Dlv decay rate. PHYSICS LETTERS. SECTION B, 655(1-2), 45-49 [10.1016/j.physletb.2007.08.085].

Quenched lattice calculation of the B -> Dlv decay rate

DE DIVITIIS, GIULIA MARIA;PETRONZIO, ROBERTO;TANTALO, NAZZARIO
2007

Abstract

We calculate, in the continuum limit of quenched lattice QCD, the form factor that enters in the decay rate of the semileptonic decay B -> Dlv. Making use of the step scaling method (SSM), previously introduced to handle two scale problems in lattice QCD, and of flavour twisted boundary conditions we extract G(B -> D)(w) at finite momentum transfer and at the physical values of the heavy quark masses. Our results can be used in order to extract the CKM matrix element V-cb by the experimental decay rate without model dependent extrapolations. (c) 2007 Elsevier B.V. All rights reserved.
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Rilevanza internazionale
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Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
eng
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De Divitiis, G.M., Molinaro, E., Petronzio, R., & Tantalo, N. (2007). Quenched lattice calculation of the B -> Dlv decay rate. PHYSICS LETTERS. SECTION B, 655(1-2), 45-49 [10.1016/j.physletb.2007.08.085].
DE DIVITIIS, Gm; Molinaro, E; Petronzio, R; Tantalo, N
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/33966
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