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تسجيل مستخدم جديدThreshold Resummation in B --> X_c l nu_l Decays
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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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