Measurements of elastic electron-proton scattering at large momentum transfer | Zendy

A. Sill | Zendy; R. G. Arnold | Zendy; P. Bosted | Zendy; C. C. Chang | Zendy; J. Gómez | Zendy; A. T. Katramatou | Zendy; C. J. Martoff | Zendy; G. G. Petratos | Zendy; A. A. Rahbar | Zendy; S. E. Rock | Zendy; Z. M. Szalata | Zendy; D. J. Sherden | Zendy; J.M. Lambert | Zendy; R. M. Lombard-Nelsen | Zendy

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Measurements of elastic electron-proton scattering at large momentum transfer

Author(s) -

A. Sill,

R. G. Arnold,

P. Bosted,

C. C. Chang,

J. Gómez,

A. T. Katramatou,

C. J. Martoff,

G. G. Petratos,

A. A. Rahbar,

S. E. Rock,

Z. M. Szalata,

D. J. Sherden,

J.M. Lambert,

R. M. Lombard-Nelsen

Publication year - 1993

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Language(s) - English

Resource type - Journals

eISSN - 1089-4918

pISSN - 0556-2821

DOI - 10.1103/physrevd.48.29

Subject(s) - physics , momentum transfer , form factor (electronics) , proton , elastic scattering , electron , atomic physics , scattering , magnetic form factor , cross section (physics) , perturbative qcd , range (aeronautics) , momentum (technical analysis) , quantum chromodynamics , nuclear physics , particle physics , quantum mechanics , finance , economics , materials science , composite material

Measurements of the forward-angle differential cross section for elastic electron-proton scattering were made in the range of momentum transfer from [ital Q][sup 2]=2.9 to 31.3 (GeV/[ital c])[sup 2] using an electron beam at the Stanford Linear Accelerator Center. The data span six orders of magnitude in cross section. Combinded statistical and systematic uncertainties in the cross section measurements ranged from 3.6% at low [ital Q][sup 2] to 19% at high [ital Q][sup 2]. These data have been used to extract the proton magnetic form factor [ital G][sub [ital M]][sup [ital p]]([ital Q][sup 2]) and Dirac form factor [ital F][sub 1][sup [ital p]]([ital Q][sup 2]) by using form factor scaling. The logarithmic falloff of [ital Q][sup 4][ital F][sub 1][sup [ital p]] expected from leading twist predictions of perturbative quantum chromodynamics is consistent with the new data at high [ital Q][sup 2]. Some nonperturbative and hybrid calculations also agree with our results.

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