Abstract
Inclusive semileptonic decays are discussed in the framework of heavy quark effective field theory by employing the short-distance expansion in the effective theory. The lowest order term turns out to be the parton model; the higher order terms may be regarded as correction terms to the parton model result. The first nonvanishing corrections to the parton model result are given and the lepton energy spectrum of inclusive semileptonic decays of heavy mesons is calculated.
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