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Proton elastic form factor ratios toQ2=3.5GeV2by polarization transfer

Authors :
R. I. Pomatsalyuk
A. V. Glamazdin
Z. Chai
K. Wijesooriya
H. Fonvieille
M. Liang
G. Quéméner
Salvatore Frullani
C. F. Perdrisat
A. Gasparian
C. R. Howell
J. R. Calarco
K. McCormick
A. Green
J. A. Templon
P. Vernin
D. J. Margaziotis
Bogdan Wojtsekhowski
J. Y. Mougey
J. Berthot
F. T. Baker
E. J. Brash
L. Todor
R. Roche
J. Gao
M. Khayat
P.Y. Bertin
G. G. Petratos
S. K. Nanda
A. Deur
Z. L. Zhou
A. J. Sarty
R. J. Woo
A. Saha
L. Cardman
S. Jaminion
W. Kahl
B. Diederich
P. E. Ulmer
Franco Garibaldi
K. Takahashi
T. Saito
R. A. Lindgren
J. J. LeRose
D. S. Brown
G. M. Huber
Y. Roblin
G. M. Gerstner
R. Suleiman
V. Gorbenko
X. Jiang
V. A. Punjabi
S. Strauch
M. B. Epstein
Z. Papandreou
A. Besson
S. Churchwell
Charles Glashausser
E. Chudakov
Shalev Gilad
G. Laveissière
R. Madey
William Bertozzi
D. S. Dale
C. W. de Jager
K. A. Aniol
J. O. Hansen
G. M. Urciuoli
G. Kumbartzki
E. A.J.M. Offermann
Andre Fleck
Pete Markowitz
G. J. Lolos
Jian-Ping Chen
H. Voskanyan
Brian Raue
R. De Leo
S. Malov
P. M. Rutt
R. L.J. van der Meer
R. Macri
C. C. Chang
David L. Prout
J. Gomez
Pavel Sorokin
L. Bimbot
T. P. Smith
G. Rutledge
E. Lakuriki
B. D. Milbrath
M. K. Jones
N. M. Piskunov
M. Kuss
Ronald Gilman
M. Iodice
L. A. Ewell
James J. Kelly
F. Xiong
L. Pentchev
Ronald Ransome
W. U. Boeglin
Nilanga Liyanage
Branislav Vlahovic
E. Cisbani
Laird Kramer
Justin I. McIntyre
J. Domingo
Kevin Fissum
George Dan Zainea
R. Michaels
Source :
Physical Review C. 71
Publication Year :
2005
Publisher :
American Physical Society (APS), 2005.

Abstract

The ratio of the proton elastic electromagnetic form factors, GEp/GMp, was obtained by measuring Pt and P, the transverse and longitudinal recoil proton polarization components, respectively, for the elastic epepreaction in the four-momentum transfer squared range of 0.5 to 3.5 GeV2. In the single-photon exchange approximation, GEp/GMp is directly proportional to Pt/P. The simultaneous measurement of Pt and P in a polarimeter reduces systematic uncertainties. The results for GEp/GMp show a systematic decrease with increasing Q2, 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. (Less)

Details

ISSN :
1089490X and 05562813
Volume :
71
Database :
OpenAIRE
Journal :
Physical Review C
Accession number :
edsair.doi...........4b2b935e639e1d34c41fd44e393a88e9
Full Text :
https://doi.org/10.1103/physrevc.71.055202