Nucleon anapole moment and parity-violating ep scattering

Authors

SL Zhu
SJ Puglia
BR HolsteinFollow
MJ Ramsey-Musolf

Publication Date

2000

Journal or Book Title

PHYSICAL REVIEW D

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.

Comments

This is the pre-published version which is collected from arXiv. The published version is at http://prd.aps.org/abstract/PRD/v62/i3/e033008

Pages

-

Volume

62

Issue

3

Recommended Citation

Zhu, SL; Puglia, SJ; Holstein, BR; and Ramsey-Musolf, MJ, "Nucleon anapole moment and parity-violating ep scattering" (2000). PHYSICAL REVIEW D. 314.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/314