Muon capture by the triton is investigated. "Exact" ground-state wave functions extracted from realistic nucleon-nucleon interactions are incorporated in the calculations. The treatment involves non-energy-weighted sum rules and explicit introduction of the three-neutron final state. Beside results on muon capture by ${\mathrm{He}}^3$, a lower limit is established for the muon-capture rate in ${\mathrm{H}}^3$.

• Received 4 November 1977

DOI:https://doi.org/10.1103/PhysRevLett.40.511