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arXiv · 1401.7789

Improved description of the pion-nucleon scattering phenomenology in covariant baryon chiral perturbation theory

Jose Manuel Alarcón
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Abstract

We highlight some of the recent advances in the application of chiral effective field theory (chiral EFT) with baryons to the $\pi N$ scattering process. We recall some problems that cast doubt on the applicability of chiral EFT to $\pi N$ and show how the relativistic formalism, once the $\Delta(1232)$-resonance is included as an explicit degree of freedom, solves these issues. Finally it is shown how this approach can be used to extract the $\sigma$-terms from phenomenological information.

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Jose Manuel Alarcón. 2014-01-30. Improved description of the pion-nucleon scattering phenomenology in covariant baryon chiral perturbation theory. https://doi.org/10.1051/epjconf/20147305010

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