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

Journal Article · Thu Aug 05 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3483413· OSTI ID:21426476

Muether, Mathew ^[1]

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1. Loomis Laboratory of Physics, University of Illinois, Urbana, IL 61801 (United States)

The G0 collaboration has measured parity-violating asymmetries in elastic electron-proton and quasielastic electron-deuteron scattering at Q{sup 2} = 0.22 and 0.63 GeV{sup 2}. 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.

• OSTI ID: 21426476
• Journal Information: AIP Conference Proceedings, Vol. 1257, Issue 1; Conference: HADRON 2009: 13. international conference on hadron spectroscopy, Tallahassee, FL (United States), 29 Nov - 4 Dec 2009; Other Information: DOI: 10.1063/1.3483413; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
ASYMMETRY
DEUTERONS
ELECTROMAGNETIC FORM FACTORS
ELECTRON-NEUTRON INTERACTIONS
ELECTRON-PROTON INTERACTIONS
ELECTRONS
FOUR MOMENTUM TRANSFER
P INVARIANCE
PARITY
PARTICLE STRUCTURE
PROTONS
QUANTUM CHROMODYNAMICS
QUASI-ELASTIC SCATTERING
S QUARKS
BARYONS
CHARGED PARTICLES
CURRENTS
DIMENSIONLESS NUMBERS
DIRECT REACTIONS
ELECTRON-NUCLEON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FORM FACTORS
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
MOMENTUM TRANSFER
NUCLEAR REACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
QUARKS
QUASI-FREE REACTIONS
SCATTERING
STRANGE PARTICLES