A Model for the Reaction at Intermediate Energies

Abstract

Polarization correlation coefficients have been measured at RIKEN for the 3 He( d, p) 4 He reaction at intermediate energies (E d = 270 MeV). We propose a model for the ( d, p) reaction mechanism using the pd elastic scattering amplitude, which is rigorously determined with a Faddeev calculation and using modern NN forces. Our theoretical predictions for the deuteron polarization observables A y , A yy , A xx and A xz at E d = 140, 200 and 270 MeV are given. The A y observables agree qualitatively in shape with the new experimental data for the reaction 3 He( d, p) 4 He.

Polarization of Nucleons in the Deuteron Stripping Reaction on Nuclei

“…Figure 1 plots the calculated angular dependencies of the vector analyzing power of the deuteron stripping reaction on 3 The dash-dot curves in Fig. 1 correspond to the results of calculations of A y for the reaction of elastic pd -scattering, performed in [12] on the basis of the formalism of Faddeev equations with the realistic NN -potential AV18.…”

“…The dash-dot curves in Fig. 1 correspond to the results of calculations of A y for the reaction of elastic pd -scattering, performed in [12] on the basis of the formalism of Faddeev equations with the realistic NN -potential AV18.…”

“…These quantities are interrelated: thus, for example, for a stripping reaction with polarized deuterons, the vector analyzing power of the reaction A y = 3P [7,11]. The formalism expounded in the present paper was used to describe the polarization observables A y of the reaction 3 He(d, p) 4 He for deuteron energies T = 140 , 200, and 270 MeV [12].…”

Polarization effects in hadronic reactions in a GeV region

“…Solid lines in the figures represent calculations based on an impulse approximation proposed in Ref. [60]. In the calculation, the Fermi motion in the target nucleus is taken into account [57].…”

“…Left panel: tensor analyzing power T 20 , spin correlation C y,y and polarization correlation coefficient C // for the 3 He(d, p)4 He reaction. The dashed and solid lines represent one-nucleon exchange calculations without[60] and taking into account the Fermi motion in the target nucleus, respectively. The full symbols are the data obtained at RIKEN[57].…”