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:
-
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- 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. https://doi.org/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. https://doi.org/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}
}
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Works referencing / citing this record:
Towards a Resolution of the Proton Form Factor Problem: New Electron and Positron Scattering Data
journal, February 2015
- Adikaram, D.; Rimal, D.; Weinstein, L. B.
- Physical Review Letters, Vol. 114, Issue 6