arXiv:nucl-th/9812004·v1·Nuclear Theory
Structure in two_pion production in the d d -> alpha X reaction
Anders Gardestig (1) · Goran Faldt (1) · Colin Wilkin (2) ((1) Uppsala University, Sweden, (2) University College London, UK)
Abstract
A model for the d d -> alpha pi pi reaction, based on two parallel N N -> d pi reactions, is extended to incorporate a complete set of input amplitudes. While low-energy cross sections are underestimated, the rich structure observed in the alpha-particle momentum distributions for 0.8 < T_d < 1.9 GeV (the ABC effect) is extraordinarily well reproduced. In addition, a recent measurement of deuteron analyzing powers agrees quite well with our predictions, both in frequency and magnitude of the oscillations.
Comments: 23 pages, LaTeX2e, 6 PS figures, submitted to PRC