QCD PREDICTIONS FOR LEPTON SPECTRA IN INCLUSIVE HEAVY FLAVOR DECAYS

Authors
BIGI II SHIFMAN M URALTSEV NG VAINSHTEIN A
Citation
Ii. Bigi et al., QCD PREDICTIONS FOR LEPTON SPECTRA IN INCLUSIVE HEAVY FLAVOR DECAYS, Physical review letters, 71(4), 1993, pp. 496-499
Citations number
15
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
71
Issue
4
Year of publication
1993
Pages
496 - 499
Database
ISI
SICI code
0031-9007(1993)71:4<496:QPFLSI>2.0.ZU;2-P
Abstract
We derive the lepton spectrum in semileptonic b decays from a nonpertu rbative 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 differen ce in the mass of the heavy hadron and the quark. Nontrivial effects a ppear 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.