We compute the QCD form factor resumming threshold logarithms in B --> X_c + l + nu_l decays to next-to-leading logarithmic approximation. We present an interpolation formula including soft as well as collinear effects softened by the non-vanishing charm mass.
Threshold resummation in B ---> X(c) l nu(l) decays / U. Aglietti, L. Di Giustino, G. Ferrera, A. Renzaglia, G. Ricciardi, L. Trentadue. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 653:1(2007), pp. 38-52. [10.1016/j.physletb.2007.07.041]
Threshold resummation in B ---> X(c) l nu(l) decays
G. Ferrera;
2007
Abstract
We compute the QCD form factor resumming threshold logarithms in B --> X_c + l + nu_l decays to next-to-leading logarithmic approximation. We present an interpolation formula including soft as well as collinear effects softened by the non-vanishing charm mass.
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