Dispersion corrections to parity violating electron scattering

M. Gorchtein, C. J. Horowitz, M. J. Ramsey-Musolf

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

We consider the dispersion correction to elastic parity violating electron-proton scattering due to γZ 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 ∼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.

Original languageEnglish
Title of host publicationVIII Latin American Symposium on Nuclear Physics and Applications, LASNPA
Pages328-333
Number of pages6
DOIs
StatePublished - 2010
Externally publishedYes
Event8th Latin American Symposium on Nuclear Physics and Applications, LASNPA - Santiago, Chile
Duration: 15 Dec 200919 Dec 2009

Publication series

NameAIP Conference Proceedings
Volume1265
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference8th Latin American Symposium on Nuclear Physics and Applications, LASNPA
Country/TerritoryChile
CitySantiago
Period15/12/0919/12/09

Keywords

  • QWEAK
  • dispersion relations

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