Lattice study of large NcN_c QCD

preprint2017arXivOpen access

Abstract

We present a lattice simulation study of large NcN_c regularities of meson and baryon spectroscopy in SU(Nc)SU(N_c) gauge theory with two flavors of dynamical fundamental representation fermions. Systems investigated include Nc=2N_c=2, 3, 4, and 5, over a range of fermion masses parametrized by a squared pseudoscalar to vector meson mass ratio between about 0.2 to 0.7. Good agreement with large NcN_c scaling is observed in the static potential, in meson masses and decay constants, and in baryon spectroscopy. This is an update of the published version of the paper (Phys. Rev. D94 (2016) 034506).

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