Two-neutron transfer in Sn isotopes beyond the N = 82 shell closure

We have performed microscopic distorted-wave Born approximation calculations of differential cross sections for the two reactions Sn-136(p, t) Sn-134 and Sn-134(t, p)Sn-136, which are within reach of near-future experiments with radioactive ion beams. We have described the initial and final nuclear states in terms of the shell model, employing a realistic low-momentum two-body effective interaction derived from the CD-Bonn nucleon-nucleon potential that has already proved quite successful in describing the available low-energy spectrum of Sn-134. We discuss the main features of the predicted cross sections for the population of the low-lying yrast states in the two nuclei considered.