Pygmy Dipole Resonance of 134Sn

Starting from a Skyrme interaction with tensor terms, the low-energy 1- spectrum populated in 134Sn from the 134In β-decay has been studied within a microscopic model including the two-phonon configuration effects. We assume an amplification of the intensity distribution by the integral Fermi factor and the most important contributions come from the allowed Gamow-Teller transitions.