Effect ofN*(1236)on Radiative Muon Capture in Calcium

Abstract

Influence of the one-pion exchange current brought about by the $N^{*}\mathrm{}\left(1236\right)\mathrm{}$ excitation is considered for the photon spectrum of radiative muon capture in calcium. It is found that the relative rate of radiative to ordinary muon capture is substantially lowered and that the discrepancy between partial conservation of axial-vector current theory and experiment is removed.