Charge Symmetry Breaking in the n p --> d pi^0 reaction

Details Charge Symmetry Breaking in the n p --> d pi^0 reaction Charge Symmetry Breaking in the n p --> d pi^0 reaction

2009-07-01

arxiv.org/abs/0907.0254v2

Phys.Rev.C81:014001,2010

Physics

Nuclear Physics

Nuclear Theory

29 pages, 14 figures; content added

Scientific paper

10.1103/PhysRevC.81.014001

The asymmetry in the angular distribution of n p --> d pi^0 due to Charge Symmetry Breaking is calculated using Heavy Baryon Chiral Perturbation Theory. Recent developments in power counting have proven successful in describing total cross sections, and we apply them to the asymmetry calculation. Reducibility in one of the leading order diagrams is examined. We compare the updated theory with experimental results for a range of physically reasonable parameters and find over-prediction for the entire range.

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