Reaction mechanism and characteristics ofT20ind+3He

Abstract

For backward elastic scattering of deuterons by 3 He, cross sections σ and tensor analyzing power T 20 are measured at E d = 140 − 270 MeV. The data are analyzed by the PWIA and by the general formula which includes virtual excitations of other channels, with the assumption of the proton transfer from 3 He to the deuteron. Using 3 He wave functions calculated by the Faddeev equation, the PWIA describes global features of the experimental data, while the virtual excitation effects are important for quantitative fits to the T 20 data. Theoretical predictions on T 20 , K y y (polarization transfer coefficient) and C yy (spin correlation coefficient) are provided up to GeV energies. 25.10.+s, 24.70.+s, 25.45.Hi

A Model for the Reaction at Intermediate Energies

“…However, the evaluations performed to this time using this model lead only to a tiny deviation from the PWIA calculations mentioned above. Recently, the Hosei group 8) analyzed T 20 and κ 0 with the 3 He-n-p cluster model using an analogy between 3 He and the proton (T = 1/2, S = 1/2). They concluded that PWIA describes the global features of the experimental data.…”