skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Two-photon exchange corrections to the pion form factor

Abstract

Here, we compute two-photon exchange corrections to the electromagnetic form factor of the pion, taking into account the finite size of the pion. Compared to the soft-photon approximation for the infrared divergent contribution which neglects hadron structure effects, the corrections are found to be ≲ 1% for small Q2 (Q2 < 0.1 GeV2), but increase to several percent for Q2 ≳ 1 GeV2 at extreme backward angles.

Authors:
;  [1];  [2]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. Univ. of Utrecht (Netherlands)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
983652
Report Number(s):
JLAB-THY-09-1106; arXiv:0911.3619; DOE/OR/23177-1050
Journal ID: ISSN 0556-2813; PRVCAN; TRN: US1004596
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 81; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; APPROXIMATIONS; ELECTROMAGNETIC FORM FACTORS; FORM FACTORS; HADRONS; PIONS

Citation Formats

Peter G. Blunden, Melnitchouk, Wally, and Tjon, John A. Two-photon exchange corrections to the pion form factor. United States: N. p., 2010. Web. doi:10.1103/PhysRevC.81.018202.
Peter G. Blunden, Melnitchouk, Wally, & Tjon, John A. Two-photon exchange corrections to the pion form factor. United States. doi:10.1103/PhysRevC.81.018202.
Peter G. Blunden, Melnitchouk, Wally, and Tjon, John A. Wed . "Two-photon exchange corrections to the pion form factor". United States. doi:10.1103/PhysRevC.81.018202. https://www.osti.gov/servlets/purl/983652.
@article{osti_983652,
title = {Two-photon exchange corrections to the pion form factor},
author = {Peter G. Blunden and Melnitchouk, Wally and Tjon, John A.},
abstractNote = {Here, we compute two-photon exchange corrections to the electromagnetic form factor of the pion, taking into account the finite size of the pion. Compared to the soft-photon approximation for the infrared divergent contribution which neglects hadron structure effects, the corrections are found to be ≲ 1% for small Q2 (Q2 < 0.1 GeV2), but increase to several percent for Q2 ≳ 1 GeV2 at extreme backward angles.},
doi = {10.1103/PhysRevC.81.018202},
journal = {Physical Review. C, Nuclear Physics},
number = ,
volume = 81,
place = {United States},
year = {2010},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Determination of the Pion Charge Form Factor at Q 2 = 1.60 and 2.45 ( GeV / c ) 2
journal, November 2006


Determination of the pion charge form factor for Q 2 = 0.60–1.60 GeV 2
journal, May 2007


Charged pion form factor between Q 2 = 0 . 60 and 2 . 45 GeV 2 . II. Determination of, and results for, the pion form factor
journal, October 2008


G E p / G M p Ratio by Polarization Transfer in e p e p
journal, February 2000


Measurement of G E p / G M p in e p e p to Q 2 = 5.6 GeV 2
journal, February 2002


Proton elastic form factor ratios to Q 2 = 3.5 GeV 2 by polarization transfer
journal, May 2005


Publisher's Note: Proton elastic form factor ratios to Q 2 = 3.5 GeV 2 by polarization transfer [Phys. Rev. C 71, 055202 (2005)]
journal, June 2005


Two-Photon Physics in Hadronic Processes
journal, November 2007


Two-Photon Exchange and Elastic Electron-Proton Scattering
journal, October 2003


Two-photon exchange in elastic electron-nucleon scattering
journal, September 2005


Δ Resonance Contribution to Two-Photon Exchange in Electron-Proton Scattering
journal, October 2005


Contribution of spin 1/2 and 3/2 resonances to two-photon exchange effects in elastic electron-proton scattering
journal, March 2007


Radiative Corrections to Elastic and Inelastic ep and up Scattering
journal, January 1969


Radiative Corrections to Electron-Proton Scattering
journal, June 1961


Feyn Calc - Computer-algebraic calculation of Feynman amplitudes
journal, June 1991


Quark-hadron duality in electron-pion scattering
journal, June 2003


Radiative corrections for ( e , e p ) reactions at GeV energies
journal, October 2001


Radiative corrections to electron-proton scattering
journal, October 2000


Global analysis of proton elastic form factor data with two-photon exchange corrections
journal, September 2007


    Works referencing / citing this record:

    Towards a Resolution of the Proton Form Factor Problem: New Electron and Positron Scattering Data
    journal, February 2015