Quantum-Number Exotic Tetraquarks at Large $N_c$ in QCD(AS)
High Energy Physics - Phenomenology
2014-03-26 v1 Nuclear Theory
Abstract
It is shown that the large limit of QCD with quarks in the two-index antisymmetric color representation [QCD(AS)] has narrow tetraquark states with exotic flavor quantum numbers. They decay into mesons with a width that is parametrically . Tetraquarks with non-exotic quantum numbers mix at leading order with mesons of the same overall quantum numbers. QCD(AS) at corresponds to ordinary QCD; its large limit represents an alternative starting point for a expansion to the standard one with quarks in the fundamental color representation.
Keywords
Cite
@article{arxiv.1401.1815,
title = {Quantum-Number Exotic Tetraquarks at Large $N_c$ in QCD(AS)},
author = {Thomas D. Cohen and Richard F. Lebed},
journal= {arXiv preprint arXiv:1401.1815},
year = {2014}
}
Comments
5 pages, 2 .eps figures, ReVTeX