Paulo F. Bedaque, Martin J. Savage
Published 1999-09-20, updated 1999-10-19Version 3
A measurement of parity-violating spin-dependent gamma proton Compton scattering will provide a theoretically clean determination of the parity-violating pion-nucleon coupling constant $h_{\pi NN}^{(1)}$. We calculate the leading parity-violating amplitude arising from one-loop pion graphs in chiral perturbation theory. An asymmetry of ~5 10^{-8} is estimated for Compton scattering of 100 MeV photons.
Comments: 6 pages, 1 figure, latex. Reference added
Journal: Phys.Rev. C62 (2000) 018501
Precision extraction of a_nn from pi- d --> n n gamma using chiral perturbation theory
Radiative Muon Capture by a Proton in Chiral Perturbation Theory
Compton scattering on the proton, neutron, and deuteron in chiral perturbation theory to O(Q^4)
