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Title: Deep inelastic pion electroproduction at threshold

Abstract

We consider the cross section of the deep inelastic pion electroproduction on a proton target at threshold for Q{sup 2} in the region 5-10 GeV{sup 2}. The corresponding amplitudes are described in terms of two form factors which we calculate using light-cone sum rules to leading order in QCD and including higher twist corrections. Our results suggest a considerable change from a small Q{sup 2} region that can be treated in the soft-pion limit using current algebra. In particular, we obtain a {pi}{sup 0} to {pi}{sup +} production ratio of order 1/3 and significant nucleon helicity-flip contributions.

Authors:
; ;  [1];  [2]
  1. Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg (Germany)
  2. Sobolev Institute of Mathematics, 630090 Novosibirsk (Russian Federation)
Publication Date:
OSTI Identifier:
20933235
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.75.014021; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; CURRENT ALGEBRA; DEEP INELASTIC SCATTERING; ELECTROPRODUCTION; FORM FACTORS; GEV RANGE 01-10; HELICITY; LIGHT CONE; PIONS NEUTRAL; PIONS PLUS; PROTONS; QUANTUM CHROMODYNAMICS; SUM RULES

Citation Formats

Braun, V. M., Lenz, A., Peters, A., and Ivanov, D. Yu. Deep inelastic pion electroproduction at threshold. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.014021.
Braun, V. M., Lenz, A., Peters, A., & Ivanov, D. Yu. Deep inelastic pion electroproduction at threshold. United States. doi:10.1103/PHYSREVD.75.014021.
Braun, V. M., Lenz, A., Peters, A., and Ivanov, D. Yu. Mon . "Deep inelastic pion electroproduction at threshold". United States. doi:10.1103/PHYSREVD.75.014021.
@article{osti_20933235,
title = {Deep inelastic pion electroproduction at threshold},
author = {Braun, V. M. and Lenz, A. and Peters, A. and Ivanov, D. Yu.},
abstractNote = {We consider the cross section of the deep inelastic pion electroproduction on a proton target at threshold for Q{sup 2} in the region 5-10 GeV{sup 2}. The corresponding amplitudes are described in terms of two form factors which we calculate using light-cone sum rules to leading order in QCD and including higher twist corrections. Our results suggest a considerable change from a small Q{sup 2} region that can be treated in the soft-pion limit using current algebra. In particular, we obtain a {pi}{sup 0} to {pi}{sup +} production ratio of order 1/3 and significant nucleon helicity-flip contributions.},
doi = {10.1103/PHYSREVD.75.014021},
journal = {Physical Review. D, Particles Fields},
number = 1,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}