Proton-neutron quasi-elastic scattering at 991 MeV

Zero-motion correlations in high-energy proton elastic scattering on40Ca with noneikonal nucleon-nucleon amplitude

“…The CDFM results for the elastic 1.04 GeV proton-4~ cross-section. --using fpN from (18), (21); ...... using fpN from (13), (22); the experimental data as in Fig. 2 see a considerable difference between the IPM and CDFM predictions.…”

“…which provide an optimal fit to the experimental protonproton [19,21,22] and proton-neutron [22] elastic scattering data. We use the values of the parameters in (13) a = 4.4 fin 2, fi = 0.24 fm 2, ~ = -0.28,…”

“…In Fig. 1 the proton-nucleon elastic cross sections calculated using the amplitudes (18) and (13) with average parameter sets (21) and (22) are compared with the proton-proton [19,22] and proton-neutron [22] elastic scattering experimental data for O > 10 ~ where the influence of the Coulomb force is small. As can be seen the cross section calculated with the noneikonal amplitude (18) is in satisfactory agreement with the proton-proton and protonneutron data in the wide region 10~ O < 90 ~ which is not the case of the one-term amplitude (13).…”

“…2 see a considerable difference between the IPM and CDFM predictions. The results of the CDFM calculations using the proton-nucleon amplitudes fpN(q) from (13) with parameter set (22) and from (18) with parameter set (21) are compared in Fig. 3.…”

“…--calculated using fpN from (18), (21); ---using fpN from (13), (22). Experimental data: p-p [19,22], p-n [22].…”