%0 Journal Article
%T Lowest-lying baryon masses in covariant SU(3)-flavor chiral perturbation theory
%A Martin Camalich, J.
%A Geng, L. S.
%A Vicente Vacas, M. J.
%J Physical Review D
%D 2010
%V 82
%N 7
%I Amer Physical Soc
%@ 1550-7998
%G English
%F MartinCamalich_etal2010
%O ISI:000283121000002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=352), last updated on Wed, 16 Mar 2011 00:37:28 +0000
%X We present an analysis of the baryon-octet and -decuplet masses using covariant SU(3)-flavor chiral perturbation theory up to next-to-leading order. Besides the description of the physical masses we address the problem of the lattice QCD extrapolation. Using the PACS-CS Collaboration data we show that a good description of the lattice points can be achieved at next-to-leading order with the covariant loop amplitudes and phenomenologically determined values for the meson-baryon couplings. Moreover, the extrapolation to the physical point up to this order is found to be better than the linear one given at leading-order by the Gell-Mann-Okubo approach. The importance that a reliable combination of lattice QCD and chiral perturbation theory may have for hadron phenomenology is emphasized with the prediction of the pion-baryon and strange-baryon sigma terms.
%R 10.1103/PhysRevD.82.074504
%U http://arxiv.org/abs/1003.1929
%U https://doi.org/10.1103/PhysRevD.82.074504
%P 074504-7pp