Hard exclusive electroproduction of a pion in the backward region

Journal Article · Sun Apr 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.074004· OSTI ID:21020264

Lansberg, J P; Pire, B ^[1]; Szymanowski, L ^[1]

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1. Centre de Physique Theorique, Ecole Polytechnique, CNRS, 91128 Palaiseau (France)

We study the scaling regime of pion electroproduction in the backward region, eN{yields}e{sup '}N{sup '}{pi}. We compute the leading-twist amplitude in the kinematical region, where it factorises into a short-distance matrix element and long-distance dominated nucleon distribution amplitudes and nucleon to pion transition distribution amplitudes. Using the chiral limit of the latter, we obtain a first estimate of the cross section, which may be experimentally studied at JLab or Hermes.

• OSTI ID: 21020264
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
CEBAF ACCELERATOR
CHIRAL SYMMETRY
CHIRALITY
CROSS SECTIONS
DISTRIBUTION
ELECTRON-NUCLEON INTERACTIONS
ELECTROPRODUCTION
MATRIX ELEMENTS
NUCLEONS
PIONS
QUANTUM CHROMODYNAMICS