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b-quark decay in the collinear approximation

Dieter Zeppenfeld

hep-pharXiv:hep-ph/9911478

Abstract

The semileptonic decay of a b-quark, b--> c l nu, is considered in the relativistic limit where the decay products are approximately collinear. Analytic results for the double differential lepton energy distributions are given for finite charm-quark mass. Their use for the fast simulation of isolated lepton backgrounds from heavy quark decays is discussed.

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