Baryon masses in large Nc chiral perturbation theory

Details Baryon masses in large Nc chiral perturbation theory Baryon masses in large Nc chiral perturbation theory

1999-01-20

arxiv.org/abs/hep-ph/9901354v1

Eur.Phys.J. A4 (1999) 363-380

Physics

High Energy Physics

High Energy Physics - Phenomenology

36 pages, REVTeX, epsfig.sty, 4 figures (7 eps files), to be published in EPJ A

Scientific paper

10.1007/s100500050245

We analyse the baryon mass spectrum in a framework which combines the 1/Nc expansion with chiral perturbation theory. Meson loop contributions involving the full SU(3) octet of pseudoscalar Goldstone bosons are evaluated, and the influence of explicit chiral and flavor symmetry breaking by non-zero and unequal quark masses is investigated. We also discuss sigma terms and the strangeness contribution to the nucleon mass.

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