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

Abstract

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.

16 pages, 4 figures, minor corrections

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Cited by in corpus (17)

• Unraveling models of CP violation through electric dipole moments of light nuclei
• Solution to Faddeev equations with two-body experimental amplitudes as input and application to J^P=1/2^+, S=0 baryon resonances
• Interplay of quark and meson degrees of freedom in near-threshold states: A practical parametrisation for line shapes
• P- and T-Violating Lagrangians in Chiral Effective Field Theory and Nuclear Electric Dipole Moments
• p-Wave pion production from nucleon-nucleon collisions
• Towards a high precision calculation for the pion-nucleus scattering lengths
• Effective Field Theory calculations of $NN\to NN\pi$
• Pion production in nucleon-nucleon collisions in chiral effective field theory: next-to-next-to-leading order contributions
• $pp\to pp{\pi }^0$ near threshold in pionless effective theory
• Pion production in nucleon-nucleon collisions in chiral effective field theory with Delta(1232)-degrees of freedom
• Two-pion-exchange and other higher-order contributions to the $pp\to pp{\pi }^0$ reaction
• Comparison of the heavy-fermion and Foldy-Wouthuysen formalisms at third order
• Threshold pion production in proton-proton collisions at NNLO in chiral EFT
• Chiral perturbation theory calculation for pn -> dpipi at threshold
• Pion reactions on two--nucleon systems
• Impulse approximation in the n p --> d pi^0 reaction reexamined
• Charge Symmetry Breaking and Nuclear Pion Production Reactions