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arXiv · 1209.0980

Chiral extrapolation of baryon mass ratios

P. C. Bruns·L. Greil·A. Schäfer
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Abstract

We analyze lattice data for octet baryon masses from the QCDSF collaboration employing manifestly covariant Baryon Chiral Perturbation Theory. It is shown that certain combinations of low-energy constants can be fixed more accurately than before from this data. We also examine the impact of this analysis on the pion-nucleon sigma term, and on the convergence properties of baryon mass expansions in the SU(3) symmetry limit.

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P. C. Bruns, L. Greil, A. Schäfer. 2013-02-26. Chiral extrapolation of baryon mass ratios. https://doi.org/10.1103/physrevd.87.054021

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