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

Harris, C. M.

Technical Information Center Oak Ridge Tennessee

关键词: Elastic scattering;    Ammonia;    Asymmetry;    Cross sections;    Dipoles;   

RP-ID  :  DE2004825021

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

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.