$χ$PT Calculations with two-pion Loops for S-wave $π^0$ Production in pp Collision

E. Gedalin; A. Moalem; L. Razdolskaya

paper

$χ$ PT Calculations with two-pion Loops for S-wave $π^{0}$ Production in pp Collision

arXiv:nucl-th/9803029

Abstract

The total cross section for the $pp \to pp π^{0}$ reaction at energies close to threshold is calculated within the frame of a chiral perturbation theory, taking into account tree and one loop diagrams up to chiral order D=2. Two-pion loop contributions dominate $π^{0}$ production at threshold. The calculated cross section reproduces data, both scale and energy dependence, fairly well.

REVTeX, graphicx, 12 pages (including 4 figures)

χPT Calculations with two-pion Loops for S-wave π0 Production in pp Collision

Abstract

$χ$ PT Calculations with two-pion Loops for S-wave $π^{0}$ Production in pp Collision