
The data of Worthington, McGruer, and Findley (WMF) on scattering of protons by protons show an apparently real contribution to the cross section arising from scattering in the $p$ state. Results of phase shift analysis of these data are presented in Table I and in Fig. 1. A satisfactory fit is obtained in terms of $s$ and $p$ waves only, and there is no evidence for a contribution from higher orbital angular momenta or from $p$ waves of "noncentral" character. The $s$ part of the scattering anomaly is analyzed in terms of the $f$ function, and substantial agreement with older results is obtained. The energy dependence of the $p$ wave phase shift is consistent with the assumption of a Yukawa force of range 1.176\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}13}$ cm, and its magnitude is accounted for tentatively in terms of a combination of "ordinary" and "Majorana" potentials as represented by the factor ($0.4+0.6{P}_{M}$) in the nuclear Hamiltonian.
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