A STUDY OF NUCLEON FORCES WITH REPULSIVE CORES: IV. CALCULATIONS OF THE SHAPE-DEPENDENT PARAMETERS IN NEUTRON–PROTON SCATTERING

Abstract

The magnitudes of the coefficients P and Q in the phase-shift expansion k cot [Formula: see text] have been investigated in the case of repulsive-core NP interactions. For square, Gaussian, exponential, and Yukawa shapes, which fit experimental values of the scattering length and the effective range, the shape-dependent parameter P has been computed as a function of r_c in both singlet and triplet states. Also, for square and Yukawa shapes, which fit the scattering length and effective range, Q has been computed in the singlet state.