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

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

2006-04-07

arxiv.org/abs/nucl-th/0604017v1

Eur.Phys.J. A28 (2006) 245-249

Physics

Nuclear Physics

Nuclear Theory

5 pages with 4 postscript figures

Scientific paper

10.1140/epja/i2006-10051-7

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.

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