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Title: QCD predictions for lepton spectra in inclusive heavy flavor decays

Abstract

We derive the lepton spectrum in semileptonic [ital b] decays from a nonperturbative treatment of QCD; it is based on an expansion in 1/[ital m][sub [ital Q]] with [ital m][sub [ital Q]] being the heavy flavor quark mass. The leading corrections arising on the 1/[ital m][sub [ital 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/[ital m][sub [ital Q]][sup 2] terms affecting mainly the end-point region; they are different for meson and baryon decays as well as for bottom and charm decays.

Authors:
; ; ;  [1]
  1. (Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States) Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455 (United States) St. Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg 188 350 (Russian Federation) Budker Institute of Nuclear Physics, Novosibirsk 630 090 (Russian Federation))
Publication Date:
OSTI Identifier:
6244090
DOE Contract Number:  
AC02-83ER40105
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (United States)
Additional Journal Information:
Journal Volume: 71:4; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; LEPTONS; SPECTRA; QUARKS; SEMILEPTONIC DECAY; CORRECTIONS; QUANTUM CHROMODYNAMICS; DECAY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; PARTICLE DECAY; POSTULATED PARTICLES; QUANTUM FIELD THEORY; WEAK PARTICLE DECAY; 662350* - Decays of Mesons- (1992-); 662230 - Quantum Chromodynamics- (1992-)

Citation Formats

Bigi, I.I., Shifman, M., Uraltsev, N.G., and Vainshtein, A. QCD predictions for lepton spectra in inclusive heavy flavor decays. United States: N. p., 1993. Web. doi:10.1103/PhysRevLett.71.496.
Bigi, I.I., Shifman, M., Uraltsev, N.G., & Vainshtein, A. QCD predictions for lepton spectra in inclusive heavy flavor decays. United States. doi:10.1103/PhysRevLett.71.496.
Bigi, I.I., Shifman, M., Uraltsev, N.G., and Vainshtein, A. Mon . "QCD predictions for lepton spectra in inclusive heavy flavor decays". United States. doi:10.1103/PhysRevLett.71.496.
@article{osti_6244090,
title = {QCD predictions for lepton spectra in inclusive heavy flavor decays},
author = {Bigi, I.I. and Shifman, M. and Uraltsev, N.G. and Vainshtein, A.},
abstractNote = {We derive the lepton spectrum in semileptonic [ital b] decays from a nonperturbative treatment of QCD; it is based on an expansion in 1/[ital m][sub [ital Q]] with [ital m][sub [ital Q]] being the heavy flavor quark mass. The leading corrections arising on the 1/[ital m][sub [ital 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/[ital m][sub [ital Q]][sup 2] terms affecting mainly the end-point region; they are different for meson and baryon decays as well as for bottom and charm decays.},
doi = {10.1103/PhysRevLett.71.496},
journal = {Physical Review Letters; (United States)},
issn = {0031-9007},
number = ,
volume = 71:4,
place = {United States},
year = {1993},
month = {7}
}