We review the theoretical developments and conceptual advances that stemmed from the
generalization of QCD to the limit of a large number of color charges, originally proposed by't …

▪ Abstract A spin-flavor symmetry emerges for baryons in the large-Nc limit. Large-Nc
baryons form irreducible representations of the spin-flavor algebra, and their static …

The relativistic chiral SU (3) Lagrangian is used to describe kaon–nucleon scattering
imposing constraints from the pion–nucleon sector and the axial-vector coupling constants …

The spin-flavor structure of large N c baryons is described in the 1/N c expansion of QCD
using quark operators. The complete set of quark operator identities is obtained, and used to …

We show that nuclear interactions are SU (4) symmetric at leading order in chiral
perturbation theory in the large-N limit of QCD. The nucleons and delta resonances form a …

1. Introduction 2. The Gross-Neveu Model 3. QCD 3.1 N-Counting Rules for Diagrams 3.1. 1
U (1) Ghosts 3.2 The't Hooft Model 3.3$ N $-Counting Rules for Correlation Functions 3.4 …

Abstract The I= 0, 1, 2, 3 mass splittings of the spin-1/2 octet and spin-3/2 decuplet baryons
are analyzed in the 1/N c expansion combined with perturbative flavor breaking. We show …

The masses of the negative parity 70-plet baryons are analyzed in large N c QCD to order
1/N c and to first order in SU (3) symmetry breaking. The existing experimental data are well …

The breaking of flavor SU (3) symmetry in the axial vector couplings and magnetic moments
of baryons is analyzed in the 1/N c expansion. A simple meson loop graph which is known to …

We study the strong interactions of the L= 1 orbitally excited baryons with one heavy quark in
the framework of the heavy hadron chiral perturbation theory. To leading order in the heavy …