Tensor Force Manifestations in Ab Initio Study of the ²H(d, γ)4He, ²H(d, p)³H, and ²H(d, n)³He Reactions.

The ²H(d, p)³H, ²H(d, n)3He, and ²H(d, ϒ)4He reactions are studied at low energies in a multichannel ab initio model that takes into account the distortions of the nuclei. The internal wave functions of these nuclei are given by the stochastic variational method with the AV81 realistic interaction and a phenome- nological three-body force included to reproduce the two-body thresholds. The obtained astrophysical S factors are all in very good agreement with the experiment. The most important channels for both transfer and radiative capture are identified by comparing to calculations with an effective central force. They are all found to dominate thanks to the tensor force. [ABSTRACT FROM AUTHOR]