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Isospin violation in low-energy pion-nucleon scattering revisited

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arxiv 0909.4390 v2 pith:DEPS52TR submitted 2009-09-24 hep-ph nucl-th

Martin Hoferichter , Bastian Kubis , Ulf-G. Mei{ss}ner This is my paper · ORCID
classification hep-phnucl-th
keywords scatteringisospinpion-nucleonapplicationbaryonbreakingcalculatecharge
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We calculate isospin breaking in pion-nucleon scattering in the threshold region in the framework of covariant baryon chiral perturbation theory. All effects due to quark mass differences as well as real and virtual photons are consistently included. As an application, we discuss the energy dependence of the triangle relation that connects elastic scattering on the proton pi+- p --> pi+- p with the charge exchange reaction pi- p --> pi0 n.

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  1. Hadronic atoms

    hep-ph 2024-12 unverdicted novelty 1.0 of 10

    A pedagogical survey of non-relativistic effective field theory for hadronic atoms, restating the known next-to-leading-order formulas for the pionic hydrogen energy shift and width.

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