An explanation of the ABC enhancement in the dd -> alpha X reaction at intermediate energies

Details An explanation of the ABC enhancement in the dd -> alpha X reaction at intermediate energies An explanation of the ABC enhancement in the dd -> alpha X reaction at intermediate energies

1997-09-22

arxiv.org/abs/nucl-th/9709044v1

Phys.Lett. B421 (1998) 41-45

Physics

Nuclear Physics

Nuclear Theory

10 pages, Latex2e, 1 eps figure, submitted to Phys. Lett. B

Scientific paper

10.1016/S0370-2693(98)00002-1

The dd -> alpha X reaction is studied in a model where each pair of nucleons in the projectile and target deuterons undergoes pion production through the NN -> d pi reaction. The condition that the two deuterons fuse to form an alpha-particle then leads to peaks at small missing masses, the well-known ABC enhancement, but also a broad structure around the maximum missing mass. With a simplified input amplitude the model gives a quantitative description of both the alpha-particle momentum and angular distributions for a deuteron beam energy of 1250 MeV.

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