Proton elastic form factor ratios to Q{sup 2}=3.5 GeV{sup 2} by polarization transfer
Abstract
The ratio of the proton elastic electromagnetic form factors, G{sub Ep}/G{sub Mp}, was obtained by measuring P{sub t} and P{sub l}, the transverse and longitudinal recoil proton polarization components, respectively, for the elastic e{sup {yields}}p{yields}ep{sup {yields}}reaction in the four-momentum transfer squared range of 0.5 to 3.5 GeV{sup 2}. In the single-photon exchange approximation, G{sub Ep}/G{sub Mp} is directly proportional to P{sub t}/P{sub l}. The simultaneous measurement of P{sub t} and P{sub l} in a polarimeter reduces systematic uncertainties. The results for G{sub Ep}/G{sub Mp} show a systematic decrease with increasing Q{sup 2}, indicating for the first time a definite difference in the distribution of charge and magnetization in the proton. The data have been reanalyzed and their systematic uncertainties have become significantly smaller than those reported previously.
- Authors:
-
- Norfolk State University, Norfolk, Virginia 23504 (United States)
- College of William and Mary, Williamsburg, Virginia 23187 (United States)
- California State University, Los Angeles, Los Angeles, California 90032 (United States)
- University of Georgia, Athens, Georgia 30602 (United States)
- Universite Blaise Pascal/CNRS-IN2P3, F-63177 Aubiere (France)
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); and others
- Publication Date:
- OSTI Identifier:
- 20698695
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review. C, Nuclear Physics
- Additional Journal Information:
- Journal Volume: 71; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.71.055202; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). Jefferson Lab Hall A Collaboration; Journal ID: ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DISTRIBUTION; ELECTROMAGNETIC FORM FACTORS; ELECTRON REACTIONS; ELECTRON-PROTON INTERACTIONS; ELECTRONS; FOUR MOMENTUM TRANSFER; MAGNETIZATION; PHOTONS; POLARIZATION; PROTONS; RECOILS
Citation Formats
Punjabi, V, Perdrisat, C F, Gerstner, G, Pentchev, L, Rutledge, G, Strauch, S, Wijesooriya, K, Aniol, K A, Epstein, M B, Margaziotis, D J, Baker, F T, Templon, J A, Berthot, J, Bertin, P Y, Besson, A, Fonvieille, H, Jaminion, S, Laveissiere, G, Bertozzi, W, and Chai, Z. Proton elastic form factor ratios to Q{sup 2}=3.5 GeV{sup 2} by polarization transfer. United States: N. p., 2005.
Web. doi:10.1103/PhysRevC.71.055202.
Punjabi, V, Perdrisat, C F, Gerstner, G, Pentchev, L, Rutledge, G, Strauch, S, Wijesooriya, K, Aniol, K A, Epstein, M B, Margaziotis, D J, Baker, F T, Templon, J A, Berthot, J, Bertin, P Y, Besson, A, Fonvieille, H, Jaminion, S, Laveissiere, G, Bertozzi, W, & Chai, Z. Proton elastic form factor ratios to Q{sup 2}=3.5 GeV{sup 2} by polarization transfer. United States. https://doi.org/10.1103/PhysRevC.71.055202
Punjabi, V, Perdrisat, C F, Gerstner, G, Pentchev, L, Rutledge, G, Strauch, S, Wijesooriya, K, Aniol, K A, Epstein, M B, Margaziotis, D J, Baker, F T, Templon, J A, Berthot, J, Bertin, P Y, Besson, A, Fonvieille, H, Jaminion, S, Laveissiere, G, Bertozzi, W, and Chai, Z. 2005.
"Proton elastic form factor ratios to Q{sup 2}=3.5 GeV{sup 2} by polarization transfer". United States. https://doi.org/10.1103/PhysRevC.71.055202.
@article{osti_20698695,
title = {Proton elastic form factor ratios to Q{sup 2}=3.5 GeV{sup 2} by polarization transfer},
author = {Punjabi, V and Perdrisat, C F and Gerstner, G and Pentchev, L and Rutledge, G and Strauch, S and Wijesooriya, K and Aniol, K A and Epstein, M B and Margaziotis, D J and Baker, F T and Templon, J A and Berthot, J and Bertin, P Y and Besson, A and Fonvieille, H and Jaminion, S and Laveissiere, G and Bertozzi, W and Chai, Z},
abstractNote = {The ratio of the proton elastic electromagnetic form factors, G{sub Ep}/G{sub Mp}, was obtained by measuring P{sub t} and P{sub l}, the transverse and longitudinal recoil proton polarization components, respectively, for the elastic e{sup {yields}}p{yields}ep{sup {yields}}reaction in the four-momentum transfer squared range of 0.5 to 3.5 GeV{sup 2}. In the single-photon exchange approximation, G{sub Ep}/G{sub Mp} is directly proportional to P{sub t}/P{sub l}. The simultaneous measurement of P{sub t} and P{sub l} in a polarimeter reduces systematic uncertainties. The results for G{sub Ep}/G{sub Mp} show a systematic decrease with increasing Q{sup 2}, indicating for the first time a definite difference in the distribution of charge and magnetization in the proton. The data have been reanalyzed and their systematic uncertainties have become significantly smaller than those reported previously.},
doi = {10.1103/PhysRevC.71.055202},
url = {https://www.osti.gov/biblio/20698695},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 71,
place = {United States},
year = {Sun May 01 00:00:00 EDT 2005},
month = {Sun May 01 00:00:00 EDT 2005}
}