Two-pion production in deuteron-deuteron collisions at low energies

Abstract

The cross section for the dd -> 4He pi pi reaction is estimated near threshold in a two-step model where a pion created in a first interaction produces a second pion in a subsequent interaction. This approach, which describes well the rates of 2pi and eta production in the pd -> 3He pi pi and dd -> 4He eta reactions, leads to predictions that are much too low compared to experiment. Alternatives to this and the double-Delta model will have to be sought to explain these data.

arXiv comment5 pages with 4 postscript figures

References in corpus (9)

• Femtometer Toroidal Structures in Nuclei
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Cited by in corpus (1)

• Exclusive measurement of two-pion production in the dd --> 4Hepipi reaction