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Title: Contribution of spin 1/2 and 3/2 resonances to two-photon exchange effects in elastic electron-proton scattering

Abstract

We calculate contributions of hadron resonances to two-photon exchange effects in electron-proton scattering. In addition to the nucleon and P33 resonance, the following heavier resonances are included as intermediate states in the two-photon exchange diagrams: D13,D33,P11,S11, and S31. We show that the corrections due to the heavier resonances are smaller than the dominant nucleon and P33 contributions. We also find that there is a partial cancellation between the contributions from the spin 1/2 and spin 3/2 resonances, which results in a further suppression of their aggregate two-photon exchange effect.

Authors:
;  [1]
  1. Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba, R3T 2N2 (Canada)
Publication Date:
OSTI Identifier:
20995183
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.75.038201; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DIAGRAMS; ELECTROMAGNETIC FORM FACTORS; ELECTRON-PROTON INTERACTIONS; INTERMEDIATE STATE; NUCLEONS; PHOTONS; RESONANCE; SPIN

Citation Formats

Kondratyuk, S., and Blunden, P. G.. Contribution of spin 1/2 and 3/2 resonances to two-photon exchange effects in elastic electron-proton scattering. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.038201.
Kondratyuk, S., & Blunden, P. G.. Contribution of spin 1/2 and 3/2 resonances to two-photon exchange effects in elastic electron-proton scattering. United States. doi:10.1103/PHYSREVC.75.038201.
Kondratyuk, S., and Blunden, P. G.. Thu . "Contribution of spin 1/2 and 3/2 resonances to two-photon exchange effects in elastic electron-proton scattering". United States. doi:10.1103/PHYSREVC.75.038201.
@article{osti_20995183,
title = {Contribution of spin 1/2 and 3/2 resonances to two-photon exchange effects in elastic electron-proton scattering},
author = {Kondratyuk, S. and Blunden, P. G.},
abstractNote = {We calculate contributions of hadron resonances to two-photon exchange effects in electron-proton scattering. In addition to the nucleon and P33 resonance, the following heavier resonances are included as intermediate states in the two-photon exchange diagrams: D13,D33,P11,S11, and S31. We show that the corrections due to the heavier resonances are smaller than the dominant nucleon and P33 contributions. We also find that there is a partial cancellation between the contributions from the spin 1/2 and spin 3/2 resonances, which results in a further suppression of their aggregate two-photon exchange effect.},
doi = {10.1103/PHYSREVC.75.038201},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}