Are there non-strange low-lying penta-quarks and can we understand their width
High Energy Physics - Phenomenology
2007-05-23 v3 Nuclear Theory
Abstract
We argue that the lightest isospin 1/2 partners of the Z^+(1530) s(bar)uudd penta-quark predicted by Diakonov, Petrov and Polyakov are not the N(1710) mixed anti-decuplet states, but the pure non-strange u(bar)(ud)(ud) and d(bar)(ud)(ud) penta-quark states which may lie as low as 1200 MeV. The expected low width of a few MeV of such a putative state may explain why it was missed in phase shift analyzes of pion-nucleon scattering.
Cite
@article{arxiv.hep-ph/0308230,
title = {Are there non-strange low-lying penta-quarks and can we understand their width},
author = {R. W. Gothe and S. Nussinov},
journal= {arXiv preprint arXiv:hep-ph/0308230},
year = {2007}
}
Comments
11 pages, 1 figure