QCD predictions for lepton spectra in inclusive heavy flavor decays

I. I. Bigi; M. Shifman; N. G. Uraltsev; A. Vainshtein

doi:10.1103/PhysRevLett.71.496

QCD predictions for lepton spectra in inclusive heavy flavor decays

I. I. Bigi, M. Shifman, N. G. Uraltsev, A. Vainshtein

Physics and Astronomy (Twin Cities)

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503 Scopus citations

Abstract

We derive the lepton spectrum in semileptonic b decays from a nonperturbative treatment of QCD; it is based on an expansion in 1/mQ with mQ being the heavy flavor quark mass. The leading corrections arising on the 1/mQ level are completely expressed in terms of the difference in the mass of the heavy hadron and the quark. Nontrivial effects appear in 1/mQ2 terms affecting mainly the end-point region; they are different for meson and baryon decays as well as for bottom and charm decays.

Original language	English (US)
Pages (from-to)	496-499
Number of pages	4
Journal	Physical review letters
Volume	71
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.71.496
State	Published - 1993

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10.1103/PhysRevLett.71.496

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title = "QCD predictions for lepton spectra in inclusive heavy flavor decays",

abstract = "We derive the lepton spectrum in semileptonic b decays from a nonperturbative treatment of QCD; it is based on an expansion in 1/mQ with mQ being the heavy flavor quark mass. The leading corrections arising on the 1/mQ level are completely expressed in terms of the difference in the mass of the heavy hadron and the quark. Nontrivial effects appear in 1/mQ2 terms affecting mainly the end-point region; they are different for meson and baryon decays as well as for bottom and charm decays.",

author = "Bigi, {I. I.} and M. Shifman and Uraltsev, {N. G.} and A. Vainshtein",

year = "1993",

doi = "10.1103/PhysRevLett.71.496",

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volume = "71",

pages = "496--499",

journal = "Physical review letters",

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T1 - QCD predictions for lepton spectra in inclusive heavy flavor decays

AU - Bigi, I. I.

AU - Shifman, M.

AU - Uraltsev, N. G.

AU - Vainshtein, A.

PY - 1993

Y1 - 1993

N2 - We derive the lepton spectrum in semileptonic b decays from a nonperturbative treatment of QCD; it is based on an expansion in 1/mQ with mQ being the heavy flavor quark mass. The leading corrections arising on the 1/mQ level are completely expressed in terms of the difference in the mass of the heavy hadron and the quark. Nontrivial effects appear in 1/mQ2 terms affecting mainly the end-point region; they are different for meson and baryon decays as well as for bottom and charm decays.

AB - We derive the lepton spectrum in semileptonic b decays from a nonperturbative treatment of QCD; it is based on an expansion in 1/mQ with mQ being the heavy flavor quark mass. The leading corrections arising on the 1/mQ level are completely expressed in terms of the difference in the mass of the heavy hadron and the quark. Nontrivial effects appear in 1/mQ2 terms affecting mainly the end-point region; they are different for meson and baryon decays as well as for bottom and charm decays.

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SP - 496

EP - 499

JO - Physical review letters

JF - Physical review letters

IS - 4

ER -

QCD predictions for lepton spectra in inclusive heavy flavor decays

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