Chiral Multiplets of Large-N Ground State Baryons

Details Chiral Multiplets of Large-N Ground State Baryons Chiral Multiplets of Large-N Ground State Baryons

1998-09-10

arxiv.org/abs/hep-ph/9809328v1

Phys.Rev.D59:031901,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages TeX and mtexsis.tex

Scientific paper

10.1103/PhysRevD.59.031901

I show that in the large-N limit the ground state baryons with helicity h fall into an ((N-2h)/4,(N+2h)/4) irreducible representation of SU(2)XSU(2). This representation determines the absolute normalization of the ground state baryon axial vector couplings at large-N. Results map precisely to (spin-flavor) SU(4) results. For instance, I find g_A =(N+2)/3. As a consequence of this multiplet structure, chiral symmetry forbids pion transitions between the ground state baryons and other baryon towers in the large-N limit.

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