Dispersion corrections to parity violating electron scattering

Journal Article · Wed Aug 04 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3480196· OSTI ID:21410819

Gorchtein, M; Horowitz, C J ^[1]; Ramsey-Musolf, M J ^[2]

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1. Nuclear Theory Center, Indiana University, Bloomington, IN 47408 (United States)
2. University of Wisconsin-Madison, Madison, WI 53706 (United States)

We consider the dispersion correction to elastic parity violating electron-proton scattering due to {gamma}Z exchange. In a recent publication, this correction was reported to be substantially larger than the previous estimates. In this paper, we study the dispersion correction in greater detail. We confirm the size of the disperion correction to be {approx}6% for the QWEAK experiment designed to measure the proton weak charge. We enumerate parameters that have to be constrained to better than relative 30% in order to keep the theoretical uncertainty for QWEAK under control.

• OSTI ID: 21410819
• Journal Information: AIP Conference Proceedings, Vol. 1265, Issue 1; Conference: 8. Latin American symposium on nuclear physics and applications, Santiago (Chile), 15-19 Dec 2009; Other Information: DOI: 10.1063/1.3480196; (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
CORRECTIONS
DISPERSIONS
ELECTRON-PROTON INTERACTIONS
ELECTRONS
HELICITY
PARITY
PROTONS
QUARK MODEL
SCATTERING
BARYONS
COMPOSITE MODELS
ELECTRON-NUCLEON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
MATHEMATICAL MODELS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES