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Proton Coulomb Form Factor from Polarized Inclusive e-p Elastic Scattering at Q(sup 2)=0.5(GeV/c)(sup 2).

DE2004825021

Publication Date	2001
Personal Author	Harris, C. M.
Page Count	260
Abstract	The proton form factors provide information on the fundamental properties of the proton and provide a test for models based on QCD. In 1998 at Jefferson Lab (JLAB) in Newport News, VA, experiment E93026 measured the inclusive e-p scattering cross section from a polarized ammonia (15NH3) target at a four momentum transfer squared of Q2= 0.5 (GeV/c)2. Longitudinally polarized electrons were scattered from the polarized target and the scattered electron was detected. Data has been analyzed to obtain the asymmetry from elastically scattered electrons from hydrogen in 15NH3. The asymmetry, Ap, has been used to determine the proton elastic form factor GEp. The result is consistent with the dipole model and data from previous experiments. However, due to the choice of kinematics, the uncertainty in the measurement is large.
Keywords	Elastic scattering Ammonia Asymmetry Cross sections Dipoles Electrons Form factors Four momentum transfer Hydrogen Polarized targets Targets Protons Quantum chromodynamics
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Virginia Univ., Charlottesville. Dept. of Physics.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200507

Proton Coulomb Form Factor from Polarized Inclusive e-p Elastic Scattering at Q(sup 2)=0.5(GeV/c)(sup 2).

Proton Coulomb Form Factor from Polarized Inclusive e-p Elastic Scattering at Q(sup 2)=0.5(GeV/c)(sup 2).
DE2004825021

Publication Date	2001
Personal Author	Harris, C. M.
Page Count	260
Abstract	The proton form factors provide information on the fundamental properties of the proton and provide a test for models based on QCD. In 1998 at Jefferson Lab (JLAB) in Newport News, VA, experiment E93026 measured the inclusive e-p scattering cross section from a polarized ammonia (15NH3) target at a four momentum transfer squared of Q2= 0.5 (GeV/c)2. Longitudinally polarized electrons were scattered from the polarized target and the scattered electron was detected. Data has been analyzed to obtain the asymmetry from elastically scattered electrons from hydrogen in 15NH3. The asymmetry, Ap, has been used to determine the proton elastic form factor GEp. The result is consistent with the dipole model and data from previous experiments. However, due to the choice of kinematics, the uncertainty in the measurement is large.
Keywords	Elastic scattering Ammonia Asymmetry Cross sections Dipoles Electrons Form factors Four momentum transfer Hydrogen Polarized targets Targets Protons Quantum chromodynamics
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Virginia Univ., Charlottesville. Dept. of Physics.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200507