Chiral Perturbation Theory Calculations For S-wave $π^0$ production In pp Collision

Details Chiral Perturbation Theory Calculations For S-wave $π^0$ production In pp Collision Chiral Perturbation Theory Calculations For S-wave $π^0$ production In pp Collision

1997-02-24

arxiv.org/abs/hep-ph/9702406v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

REVTeX, 15 pages including figures, 4 postscript figures

Scientific paper

The total cross section for the pp --> pp $\pi^0$ reaction at energies close to threshold is calculated within the frame of a chiral perturbation theory. The tree and one loop diagrams up to chiral order D=2 contributions are taken into account. The $L^{(0)}$ isoscalar-scalar part of t-channel two-pion exchange loop diagrams enhances the production amplitude strongly. The calculated cross section scale and energy dependence are very close to data.

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