Eta(') mass and chiral symmetry breaking at large N(c) and N(f).
We propose a method for implementing the large- N(c), large-N(f) limit of QCD at the effective Lagrangian level. Depending on the value of the ratio N(f)/N(c), different patterns of chiral symmetry breaking can arise, leading in particular to different behaviors of the eta(') mass in the combined large-N limit.
Girlanda
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L
Dipartimento di Fisica Galileo Galilei, Università di Padova and INFN, via Marzolo 8, I-35131 Padova, Italy. girlanda@pd.infn.it
Stern
J
J
Talavera
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