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QCD PREDICTIONS FOR LEPTON SPECTRA IN INCLUSIVE HEAVY FLAVOR DECAYS

Author:
BIGI, II  SHIFMAN, M  URALTSEV, NG  VAINSHTEIN, A  


Journal:
PHYSICAL REVIEW LETTERS


Issue Date:
1993


Abstract(summary):

We derive the lepton spectrum in semileptonic b decays from a nonperturbative treatment of QCD; it is based on an expansion in 1/m(Q) with m(Q) being the heavy flavor quark mass. The leading corrections arising on the 1/m(Q) level are completely expressed in terms of the difference in the mass of the heavy hadron and the quark. Nontrivial effects appear in 1/m(Q)2 terms affecting mainly the end-point region; they are different for meson and baryon decays as well as for bottom and charm decays.


Page:
496---499


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