Alpha-Particle Momentum Distributions from 12C Decaying Resonances

The computed α particle momentum distributions from the decay of low-lying ¹²C resonances are shown. The wave function of the decaying fragments is computed by means of the complex scaled hyperspherical adiabatic expansion method. The large-distance part of the wave functions is crucial and has to be accurately calculated. We discuss energy distributions, angular distributions and Dalitz plots for the 4⁺, 1⁺ and 4^- states of ¹²C.