OLYMPUS and the proton form factor puzzle

Lauren Ice, Ricardo Alarcon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Recent measurements of the proton electric to magnetic form factor ratio using polarization techniques reveal a large discrepancy with measurements found using the Rosenbluth separation technique. It has been proposed that this discrepancy is due to a non-negligible multiple photon exchange contribution in the electron-proton elastic scattering cross section. The OLYMPUS experiment will measure the multiple photon exchange contribution by finding the cross section ratio of positron-proton to electron-proton scattering within 1%. The experiment will be carried out at the DESY laboratory in Hamburg Germany using the electron and positron storage ring DORIS and an internal unpolarized hydrogen gas target. The scattered particles will be detected using the Bates Large Acceptance Spectrometer Toroid (BLAST).

Original languageEnglish (US)
Title of host publicationAIP Conference Proceedings
Pages206-213
Number of pages8
Volume1423
DOIs
StatePublished - 2012
Event9th Latin American Symposium on Nuclear Physics and Applications - Quito, Ecuador
Duration: Jul 18 2011Jul 22 2011

Other

Other9th Latin American Symposium on Nuclear Physics and Applications
CountryEcuador
CityQuito
Period7/18/117/22/11

Fingerprint

proton scattering
form factors
positrons
toroids
protons
photons
Germany
acceptability
scattering cross sections
elastic scattering
electron scattering
electrons
spectrometers
cross sections
polarization
hydrogen
gases

Keywords

  • Proton elastic form factors
  • two-photon exchange

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ice, L., & Alarcon, R. (2012). OLYMPUS and the proton form factor puzzle. In AIP Conference Proceedings (Vol. 1423, pp. 206-213) https://doi.org/10.1063/1.3688804

OLYMPUS and the proton form factor puzzle. / Ice, Lauren; Alarcon, Ricardo.

AIP Conference Proceedings. Vol. 1423 2012. p. 206-213.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ice, L & Alarcon, R 2012, OLYMPUS and the proton form factor puzzle. in AIP Conference Proceedings. vol. 1423, pp. 206-213, 9th Latin American Symposium on Nuclear Physics and Applications, Quito, Ecuador, 7/18/11. https://doi.org/10.1063/1.3688804
Ice L, Alarcon R. OLYMPUS and the proton form factor puzzle. In AIP Conference Proceedings. Vol. 1423. 2012. p. 206-213 https://doi.org/10.1063/1.3688804
Ice, Lauren ; Alarcon, Ricardo. / OLYMPUS and the proton form factor puzzle. AIP Conference Proceedings. Vol. 1423 2012. pp. 206-213
@inproceedings{f7502db5290d41a09652a4057cf2dfc4,
title = "OLYMPUS and the proton form factor puzzle",
abstract = "Recent measurements of the proton electric to magnetic form factor ratio using polarization techniques reveal a large discrepancy with measurements found using the Rosenbluth separation technique. It has been proposed that this discrepancy is due to a non-negligible multiple photon exchange contribution in the electron-proton elastic scattering cross section. The OLYMPUS experiment will measure the multiple photon exchange contribution by finding the cross section ratio of positron-proton to electron-proton scattering within 1{\%}. The experiment will be carried out at the DESY laboratory in Hamburg Germany using the electron and positron storage ring DORIS and an internal unpolarized hydrogen gas target. The scattered particles will be detected using the Bates Large Acceptance Spectrometer Toroid (BLAST).",
keywords = "Proton elastic form factors, two-photon exchange",
author = "Lauren Ice and Ricardo Alarcon",
year = "2012",
doi = "10.1063/1.3688804",
language = "English (US)",
isbn = "9780735410039",
volume = "1423",
pages = "206--213",
booktitle = "AIP Conference Proceedings",

}

TY - GEN

T1 - OLYMPUS and the proton form factor puzzle

AU - Ice, Lauren

AU - Alarcon, Ricardo

PY - 2012

Y1 - 2012

N2 - Recent measurements of the proton electric to magnetic form factor ratio using polarization techniques reveal a large discrepancy with measurements found using the Rosenbluth separation technique. It has been proposed that this discrepancy is due to a non-negligible multiple photon exchange contribution in the electron-proton elastic scattering cross section. The OLYMPUS experiment will measure the multiple photon exchange contribution by finding the cross section ratio of positron-proton to electron-proton scattering within 1%. The experiment will be carried out at the DESY laboratory in Hamburg Germany using the electron and positron storage ring DORIS and an internal unpolarized hydrogen gas target. The scattered particles will be detected using the Bates Large Acceptance Spectrometer Toroid (BLAST).

AB - Recent measurements of the proton electric to magnetic form factor ratio using polarization techniques reveal a large discrepancy with measurements found using the Rosenbluth separation technique. It has been proposed that this discrepancy is due to a non-negligible multiple photon exchange contribution in the electron-proton elastic scattering cross section. The OLYMPUS experiment will measure the multiple photon exchange contribution by finding the cross section ratio of positron-proton to electron-proton scattering within 1%. The experiment will be carried out at the DESY laboratory in Hamburg Germany using the electron and positron storage ring DORIS and an internal unpolarized hydrogen gas target. The scattered particles will be detected using the Bates Large Acceptance Spectrometer Toroid (BLAST).

KW - Proton elastic form factors

KW - two-photon exchange

UR - http://www.scopus.com/inward/record.url?scp=84858250994&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84858250994&partnerID=8YFLogxK

U2 - 10.1063/1.3688804

DO - 10.1063/1.3688804

M3 - Conference contribution

SN - 9780735410039

VL - 1423

SP - 206

EP - 213

BT - AIP Conference Proceedings

ER -