Initial-State Coulomb Interaction in the dd -> alpha pi^0 Reaction

Details Initial-State Coulomb Interaction in the dd -> alpha pi^0 Reaction Initial-State Coulomb Interaction in the dd -> alpha pi^0 Reaction

2007-03-09

arxiv.org/abs/nucl-th/0703021v1

Phys.Rev.C75:055204,2007; Erratum-ibid.C77:019904,2008

Physics

Nuclear Physics

Nuclear Theory

10 pages, 2 postscript figures, 2 tables

Scientific paper

10.1103/PhysRevC.75.055204

The effects of initial-state Coulomb interactions in the charge-symmetry-breaking reaction dd -> alpha pi^0 are investigated within a previously published formalism. This is a leading order effect in which the Coulomb interaction between the two initial state protons leads to the breakup of the two deuterons into a continuum state that is well connected to the final alpha pi^0 state by the strong emission of a pion. As a first step, we use a simplified set of d and alpha wave functions and a plane-wave approximation for the initial dd state. This Coulomb mechanism, by itself, yields cross sections that are much larger than the experimental ones, and which are comparable in size to the contributions from other mechanisms. Inclusion of this mechanism is therefore necessary in a realistic calculation.

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