Parity Violation in elastic electron scattering : A first measurment of the parity-violating Asymmetry at Q² = 0.631 GeV/c² at Backward Angle.

Thesis/Dissertation · Tue May 01 00:00:00 EDT 2007

DOI:https://doi.org/10.2172/955699· OSTI ID:955699

Bailey, Stephanie L. ^[1]

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1. College of William and Mary, Williamsburg, VA (United States)

The goal of Experiment E04-115 (the G0 backward angle measurement) at Jefferson Lab is to investigate the contributions of strange quarks to the fundamental properties of the nucleon. The experiment measures parity-violating asymmetries in elastic electron scattering off hydrogen and quasielastic electron scattering off deuterium at backward angles at Q² = 0.631 (GeV/c)² and Q² = 0.232 (GeV/c)². The backward angle measurement represents the second phase of the G0 experiment. The first phase, Experiment E00-006 (the G0 forward angle experiment), measured parity-violating asymmetries in elastic electron scattering off hydrogen at forward angles over a Q² range of 0.1-1.0 (GeV/c)². The experiments used a polarized electron beam and unpolarized hydrogen and deuterium liquid targets. From these measurements, along with the electromagnetic form factors, one can extract the contribution of the strange quark to the proton's charge and magnetization distributions. This thesis represents a fi

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-060R23177
• OSTI ID: 955699
• Report Number(s): JLAB-PHY-07-796; TRN: US201014%%1343
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
ASYMMETRY
DEUTERIUM
ELECTROMAGNETIC FORM FACTORS
ELECTRON BEAMS
ELECTRONS
HYDROGEN
MAGNETIZATION
PARITY
QUARKS
SCATTERING
TARGETS