The weak structure of the nucleon from muon capture on 3He

Abstract

I use a microscopic calculation of the weak capture process 3He(\mu^{-},\nu_\mu)3H, to extract and constrain the weak form factors of the nucleon, particularly the induced pseudo-scalar, and the second-class currents. The induced pseudo-scalar form-factor is found to agree with the prediction of chiral perturbation theory. The constraint found on the conservation of vector current (CVC) hypothesis is the tightest to date.

Comments: Talk presented at the 18th Particle and Nuclei International Conference, PANIC08, Eilat, 9-14 November 2008. To appear in Nuclear Physics A