QCD predictions for lepton spectra in inclusive heavy flavor decays

Mar, 1993
9 pages
Published in:
  • Phys.Rev.Lett. 71 (1993) 496-499
e-Print:
Report number:
  • UND-HEP-93-BIG01,
  • TPI-MINN-93-12-T,
  • UMN-TH-1149-93

Citations per year

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Abstract: (arXiv)
We derive the lepton spectrum in semileptonic beauty decays from a nonperturbative treatment of QCD; it is based on an expansion in 1/mQ1/m_Q with mQm_Q being the heavy flavour quark mass. The leading corrections arising on the 1/mQ1/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/mQ21/m_Q^2 terms affecting mainly the endpoint region; they are different for meson and baryon decays as well as for beauty and charm decays.
  • bottom particle: semileptonic decay
  • semileptonic decay: bottom particle
  • decay: inclusive reaction
  • inclusive reaction: decay
  • HQET model
  • quantum chromodynamics: nonperturbative
  • expansion: mass
  • mass: expansion
  • model: spectator
  • energy spectrum: (lepton)