Measurements of the strangeness content of the proton through parity violating electron scattering at JLAB
Conference
·
OSTI ID:756763
The authors have measured the parity violating asymmetry in the cross section for elastic scattering of longitudinally polarized electrons from protons at 3.36 GeV incident energy and 0.48 GeV/c{sup 2} momentum transfer at Jefferson Lab. This asymmetry is {minus}14.5 {+-} 2.3 ppm, consistent with the Standard Model with no contribution from strange quarks. They extract the combination of strange form factors G{sub E}{sup s} + 0.39G{sub M}{sup s} = 0.023 {+-} 0.034(stat) {+-} 0.022(syst) {+-} 0.026{delta}G{sub E}{sup n}, where the last error arises from the neutron electric form factor.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 756763
- Report Number(s):
- DOE/ER/40150-1616; JLAB-PHY-00-09
- Country of Publication:
- United States
- Language:
- English
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