Measurement of the proton elastic form factors for Q2=1-3(Gev/c)2

R. C. Walker*, B. W. Filippone, J. Jourdan, R. Milner, R. McKeown, D. Potterveld, R. Arnold, D. Benton, P. Bosted, G. deChambrier, L. Clogher, A. Lung, S. E. Rock, Z. M. Szalata, A. Para, F. Dietrich, K. Van Bibber, J. Button-Shafer, B. Debebe, R. S. HicksS. Dasu, P. de Barbaro, A. Bodek, H. Harada, M. W. Krasny, K. Lang, E. M. Riordan, J. Alster, R. Gearhart, L. W. Whitlow

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We report measurements of the proton elastic form factors, GEp and GMp, extracted from electron scattering in the range 1≤Q2≤3(GeV/c)2. The uncertainties are <15% in GEp and <3% in GMp. The values of GEp are larger than indicated by most theoretical parameterizations, The ratio of Pauli and Dirac form factors, Q2F2p/F1p, is lower and demonstrates less Q2 dependence than most of these parameterizations. Comparisons are made to theoretical models, including those based on perturbative QCD and vector-meson dominance.

Original languageEnglish
Pages (from-to)353-358
Number of pages6
JournalPhysics Letters B
Volume224
Issue number3
DOIs
StatePublished - 29 Jun 1989

Funding

FundersFunder number
US-Israel Binational Science Foundation
National Science FoundationPHY85-05682, PHY84-10549
U.S. Department of EnergyDE-AC03-76SF00515, DE-AC02-76ER02853, DE-AC02-76ER13065, W-7405-ENG-48

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