Nuclear transition rates in μ-catalyzed p-d fusion have been calculated using numerically converged ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ bound-state and p-d scattering wave functions for the first time. The transition rates for M1 radiative capture in both quartet and doublet initial states have been computed using a model of meson-exchange currents which reproduces the thermal n-d capture cross section, and are in excellent agreement with experiment. The muon internal-conversion rate is in very good agreement with a recent reanalysis of old bubble-chamber measurements. Furthermore, our nonvanishing quartet capture rate resolves the anomaly in the Wolfenstein-Gerstein effect.

• Received 3 December 1990

DOI:https://doi.org/10.1103/PhysRevLett.66.1827