Baryon masses and nucleon sigma terms in manifestly Lorentz-invariant baryon chiral perturbation theory

Abstract

We discuss the masses of the ground state baryon octet and the nucleon sigma terms in the framework of manifestly Lorentz-invariant baryon chiral perturbation theory. In order to obtain a consistent power counting for renormalized diagrams the extended on-mass-shell renormalization scheme is applied.

arXiv comment18 pages, 3 figures, accepted for publication in J. Phys. G

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