Remarks on N N -> N N pi beyond leading order

Details Remarks on N N -> N N pi beyond leading order Remarks on N N -> N N pi beyond leading order

2007-03-05

arxiv.org/abs/nucl-th/0703012v2

Phys.Lett.B650:354-361,2007

Physics

Nuclear Physics

Nuclear Theory

16 pages, 4 figures, minor corrections

Scientific paper

10.1016/j.physletb.2007.05.038

In recent years a two-scale expansion was established to study reactions of the type N N -> N N pi within chiral perturbation theory. Then the diagrams of some subclasses that are invariant under the choice of the pion field no longer appear at the same chiral order. In this letter we show that the proposed expansion still leads to well defined results. We also discuss the appropriate choice of the heavy baryon propagator.

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