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

Goran Faldt·Ulla Tengblad·Colin Wilkin
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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.

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Goran Faldt, Ulla Tengblad, Colin Wilkin. 2006-04-07. Two-pion production in deuteron-deuteron collisions at low energies. https://doi.org/10.1140/epja%2Fi2006-10051-7

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