# $\eta'$ mass and chiral symmetry breaking at large Nc and Nf

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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00019225
Contributor : Suzanne Robert <>
Submitted on : Monday, July 16, 2001 - 3:06:47 PM
Last modification on : Wednesday, September 16, 2020 - 4:06:48 PM

### Citation

L. Girlanda, J. Stern, P. Talavera. $\eta'$ mass and chiral symmetry breaking at large Nc and Nf. Physical Review Letters, American Physical Society, 2001, 86, pp.5828-5861. ⟨in2p3-00019225⟩

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