Evidence that the a0(980) and f0(980) are not elementary particles
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We study the interesting problem of whether it is possible to distinguish composite from elementary particles. In particular we generalize a model-independent approach of S. Weinberg to the case of unstable particles. This allows us to apply our formalism to the case of the a0(980) and f0(980) resonances and to address the question whether these particles are predominantly genuine, confined quark states (of or structure) or governed by mesonic components.
Cite
@article{arxiv.hep-ph/0308129,
title = {Evidence that the a0(980) and f0(980) are not elementary particles},
author = {V. Baru and J. Haidenbauer and C. Hanhart and Yu. Kalashnikova and A. Kudryavtsev},
journal= {arXiv preprint arXiv:hep-ph/0308129},
year = {2008}
}
Comments
15 pages, 4 Figures