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Isospin breaking in the pion-nucleon scattering lengths

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arxiv 0903.3890 v1 pith:TQH4OFIE submitted 2009-03-23 hep-ph nucl-th

Martin Hoferichter , Bastian Kubis , Ulf-G. Mei{ss}ner This is my paper · ORCID
classification hep-phnucl-th
keywords breakingisospinlengthspion-nucleonscatteringanalyzebaryonchannels
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We analyze isospin breaking through quark mass differences and virtual photons in the pion-nucleon scattering lengths in all physical channels in the framework of covariant baryon chiral perturbation theory.

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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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