arXiv:hep-ph/0103221·v1·High Energy Physics — Phenomenology
Eta' Mass and Chiral Symmetry Breaking at Large Nc and Nf
L. Girlanda (Padua U. & INFN)🇮🇹 · J. Stern🇫🇷 · P. Talavera (Orsay, IPN)🇫🇷
Abstract
We propose a method for implementing the large-Nc, large-Nf limit of QCD at the effective Lagrangian level. Depending on the value of the ratio Nf/Nc, different patterns of chiral symmetry breaking can arise, leading in particular to different behaviors of the eta-prime mass in the combined large-N limit.
Comments: revtex 12 pages, one postscript figure