1994/02/17 by Dan Pirjol, D. Pirjol, Pirjol, D.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9402312
19 pages+1 figure LaTeX, MZ-TH/94-03
arxiv created 1994/02/17 · openalex publication_date 1994/02/17 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The structure function of a heavy quark in a heavy hadron in electroproduction is calculated from QCD. Its deviation from the parton model prediction (a delta function) is shown to be governed by a shape function, similar to the one recently proposed by Neubert and Bigi \em et al. to describe the end-point behaviour of the lepton spectrum in semileptonic B→ Xueν decays and the line shape in B→ Xsγ. Two new sum rules are derived which extend the Bjorken-Dunietz-Taron sum rule by including corrections suppressed by the inverse heavy quark mass.