Abstract
We study deuteron- proton elastic scattering in the deuteron energy range between 500 MeV and 2 GeV at the cms scattering angle \theta^*\ge 140^\circθ*≥140∘. The reaction is considered in the relativistic multiple scattering expansion framework. The four reaction mechanisms are included into consideration: one-nucleon exchange, single scattering, double scattering, and the term corresponding to the delta excitation in the intermediate state.The model is applied to describe the angular dependence of the differential cross section at the deuteron energies of between 880 and 1300 MeV. Also the energy dependence of the differential cross section and polarisation observables such as tensor analyzing power T_{20}T20 and polarization transfer from the deuteron to proton \varkappa𝜘 are considered at the scattering angle equal to 180^\circ∘. Contributions of the different reaction mechanisms into the reaction amplitude are demonstrated in comparison with the existing experimental data.
Highlights
Elastic deuteron-proton scattering is the simplest example of the hadron nucleus collision
At the nucleon energies above 130 MeV there is some discrepancy between the experimental data and theoretical predictions in the minimum of the differential cross section [2]
We considered dp- backward elastic scattering taking into account four contributions: onenucleon-exchange, single-scattering, double-scattering, and ∆-excitation in an intermediate state
Summary
Elastic deuteron-proton scattering is the simplest example of the hadron nucleus collision. The Glauber theory taking into account both single and double nucleon-nucleon interaction successfully describes the differential cross sections of the dp-elastic scattering at small angles [3]- [4]. It does not properly work at larger scattering angles. The double scattering with nucleon in an intermediate state was not considered in these papers Perhaps, it was the reason why the description of the differential cross sections energy dependence was not good enough. We apply the model for description of the deuteron-proton elastic scattering in backward kinematics
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