Published June 3, 2005 | Version v1
Journal article Metadata-only

Two-Photon-Exchange Correction to Parity-Violating Elastic Electron-Proton Scattering

Creators

  • 1. Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States)
  • 2. Department of Physics, College of William and Mary, Williamsburg, Virginia 23187 (United States)

Description

Higher-order QED effects play an important role in precision measurements of nucleon elastic form factors in electron scattering. Here we introduce a two-photon-exchange QED correction to the parity-violating polarization asymmetry of elastic electron-proton scattering. We calculate this correction in the parton model using the formalism of generalized parton distributions, and demonstrate that it can reach several percent in certain kinematics, becoming comparable in size with existing experimental measurements of strange-quark effects in the proton neutral weak current

Additional details

Identifiers

DOI
10.1103/PhysRevLett.94.212301;
arXiv
arXiv:hep-ph/0502128v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
94
Journal Issue
21
Journal Page Range
p. 212301-212301.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37012241
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ASYMMETRY; CORRECTIONS; ELASTIC SCATTERING; ELECTRON-PROTON INTERACTIONS; ELECTRONS; FORM FACTORS; NEUTRAL CURRENTS; P INVARIANCE; PARITY; PARTON MODEL; PARTONS; PHOTONS; POLARIZATION; PROTONS; QUANTUM ELECTRODYNAMICS; S QUARKS
Descriptors DEC
ALGEBRAIC CURRENTS; BARYONS; BOSONS; COMPOSITE MODELS; CURRENTS; DIMENSIONLESS NUMBERS; ELECTRODYNAMICS; ELECTRON-NUCLEON INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; INTERACTIONS; INVARIANCE PRINCIPLES; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PROPERTIES; POSTULATED PARTICLES; QUANTUM FIELD THEORY; QUARKS; SCATTERING; STRANGE PARTICLES

Optional Information

Notes
(c) 2005 The American Physical Society