The $n-d$ and $n-{\mathrm{}\left(\mathrm{np}\right)\mathrm{}}_{s=0\mathrm{}}$ triton $s$-wave asymptotic normalization constants are calculated from a realistic one-boson-exchange model of the $\mathrm{NN}$ interaction. Both parameters are calculated from integral relations which make the analytic continuation to the pole unambiguous. The values obtained are ${C_t}^2=2.60\mathrm{}$ and ${C_s}^2=-0.69\mathrm{}$.

• Received 15 November 1979

DOI:https://doi.org/10.1103/PhysRevLett.44.237