TY  - JOUR
AU  - Martin Camalich, J.
AU  - Geng, L. S.
AU  - Vicente Vacas, M. J.
PY  - 2010
DA  - 2010//
TI  - Lowest-lying baryon masses in covariant SU(3)-flavor chiral perturbation theory
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 074504
EP  - 7pp
VL  - 82
IS  - 7
PB  - Amer Physical Soc
AB  - 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.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1003.1929
UR  - https://doi.org/10.1103/PhysRevD.82.074504
DO  - 10.1103/PhysRevD.82.074504
LA  - English
N1  - ISI:000283121000002
ID  - MartinCamalich_etal2010
ER  -