Inclusive 1Vcb1 determination in MS mass scheme using dual-space-renormalon-subtraction method

We determine 1Vcb1 from the inclusive semileptonic decay width of the B meson with the known N3LO perturbative coefficients for the first time in the MS mass scheme. We make use of a recently developed method, dual-space-renormalon-subtraction method, to separate and subtract the order A2QCD/mb infrared renormalon. This allows us to perform the analysis accurately in the MS mass scheme, in which otherwise the perturbative series does not converge well up to the currently calculated perturbation order. Our result reads 1Vcb1 = 0.0415( thorn 10 -12 ), which is consistent with the previous results based on other mass schemes and shows an independent cross-check of the current theoretical evaluation of the inclusive decay width.