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Structure in two_pion production in the d d -> alpha X reaction

Anders Gardestig·Goran Faldt·Colin Wilkin
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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.

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Anders Gardestig, Goran Faldt, Colin Wilkin. 1998-12-01. Structure in two_pion production in the d d -> alpha X reaction. https://doi.org/10.1103/physrevc.59.2608

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