Loading...
Thumbnail Image
Publication

Nucleon anapole moment and parity-violating ep scattering

Abstract
Parity-violating (PV) interactions among quarks in the nucleon induce a PV γNN coupling, or anapole moment (AM). We compute electroweak gauge-independent contributions to the AM through O(1/Λχ2) in chiral perturbation theory. We estimate short-distance PV effects using resonance saturation. The AM contributions to PV electron-proton scattering slightly enhance the axial vector radiative corrections, RAp, over the scale implied by the standard model when weak quark-quark interactions are neglected. We estimate the theoretical uncertainty associated with the AM contributions to RAp to be large, and discuss the implications for the interpretation PV of ep scattering.
Type
article
article
Date
2000-01-01
Publisher
Degree
Advisors
Rights
License
Research Projects
Organizational Units
Journal Issue
Embargo
DOI
Publisher Version
Embedded videos