Strange Quark Contributions to Parity-Violating Asymmetries in the Backward Angle G0 Electron Scattering Experiment

Conference · Sun Aug 01 00:00:00 EDT 2010 · AIP Conf. Proc.

DOI:https://doi.org/10.1063/1.3483413· OSTI ID:990612

Muether, Mathew

The G0 collaboration has measured parity-violating asymmetries in elastic electron-proton and quasielastic electron-deuteron scattering at Q2 = 0.22 and 0.63 GeV2. They are sensitive to strange quark contributions to currents in the nucleon, and to the nucleon axial current. The results indicate strange quark contributions of <10% of the charge and magnetic nucleon form factors at these four-momentum transfers. They also provide the first measurement of anapole moment effects in the axial current at these four-momentum transfers.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 990612
• Report Number(s): JLAB-THY-09-1127; DOE/OR/23177-1348
• Journal Information: AIP Conf. Proc., Journal Name: AIP Conf. Proc. Journal Issue: 1-2 Vol. 1257
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELECTRONS
FORM FACTORS
FOUR MOMENTUM TRANSFER
HADRONS
NUCLEONS
QUARKS
SCATTERING