Mechanism of proton-$^3{\rm He} $ elastic backward scattering at intermediate energy

Details Mechanism of proton-$^3{\rm He} $ elastic backward scattering at intermediate energy Mechanism of proton-$^3{\rm He} $ elastic backward scattering at intermediate energy

2001-12-28

arxiv.org/abs/nucl-th/0112078v4

Physics

Nuclear Physics

Nuclear Theory

10 pages, 7 figures, revtex4 format, corrected version

Scientific paper

We provide systematic analysis of the differential cross section of the proton-$^3{\rm He}$ elastic scattering at $\theta_{\rm cm}=180^{\circ}$ and at $T_p<700$ MeV. Three mechanisms are discussed: 2N pair exchange in the triplet and singlet spin states, pion exchange and direct mechanism. It is shown that t Tp>150 MeV tree-body structure, including triplet and singlet states of the 2N pair, becomes of great importance for understanding energy dependence of the reaction observables. Prediction for the differential cross section and the polarization correlation $C_{00nn} which can be studied now in experiment are given. PACS number(s): 21.30.Cb, 21.30.-x, 25.40.Cm, 25.55.Ci

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