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Measurements of the proton elastic form factors for 1≤Q^2≤3 (GeV/c)^2 at SLAC

Walker, R. C. and Filippone, B. W. and Jourdan, J. and Milner, R. and McKeown, R. and Potterveld, D. and Andivahis, L. and Arnold, R. and Benton, D. and Bosted, P. and deChambrier, G. and Lung, A. and Rock, S. E. and Szalata, Z. M. and Para, A. and Dietrich, F. and Van Bibber, K. and Button-Shafer, J. and Debebe, B. and Hicks, R. S. and Dasu, S. and de Barbaro, P. and Bodek, A. and Harada, H. and Krasny, M. W. and Lang, K. and Riordan, E. M. and Gearhart, R. and Whitlow, L. W. and Alster, J. (1994) Measurements of the proton elastic form factors for 1≤Q^2≤3 (GeV/c)^2 at SLAC. Physical Review D, 49 (11). pp. 5671-5689. ISSN 0556-2821.

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We report measurements of the proton form factors GEp and GMp extracted from elastic scattering in the range 1≤Q^2≤3 (GeV/c)^2 with total uncertainties < 15% in GEp and < 3% in GMp. Comparisons are made to theoretical models, including those based on perturbative QCD, vector-meson dominance, QCD sum rules, and diquark constituents in the proton. The results for GEp are somewhat larger than indicated by most theoretical parametrizations, and the ratios of the Pauli and Dirac form factors Q^2(F2p / F1p) are lower in value and demonstrate a weaker Q^2 dependence than those predictions. A global extraction of the elastic form factors from several experiments in the range 0.1 0.1<Q^2<10 (GeV/c)^2 is also presented.

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Additional Information:© 1994 American Physical Society. Received 4 November 1993. We would like to thank B. Richter, R. Eisele, C. Hudspeth, G. Davis, J. Mark, M. Starek, J. Nicol, A. Sill, and the SLAC management and staff for their assistance in this experiment. This research was supported by National Science Foundation Grant Nos. PHY85-05682 and PHY84-10549 and Department of Energy Contract Nos. DE-AC02-76ER13065, DE-AC02-76ER02853, DE-AC03-76F00515, W-7405-ENG-48, and the US-Israel Binational Science Foundation.
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC02-76ER13065
Department of Energy (DOE)DE-AC02-76ER02853
Department of Energy (DOE)DE-AC03-76F00515
Department of Energy (DOE)W-7405-ENG-48
Binational Science Foundation (USA-Israel)UNSPECIFIED
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12482
Deposited By: Tony Diaz
Deposited On:13 Dec 2008 00:31
Last Modified:01 May 2015 19:48

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