Two-photon decay of a light scalar quark-antiquark state
High Energy Physics - Phenomenology
2008-12-18 v1
Abstract
The two-photon decay of a light scalar quarkonium is evaluated in a local and a nonlocal approaches. It is shown that the two-photon decay, driven by a triangle quark-loop diagram, is smaller than 1 keV for a mass below 0.7 GeV.
Keywords
Cite
@article{arxiv.0804.3216,
title = {Two-photon decay of a light scalar quark-antiquark state},
author = {Francesco Giacosa},
journal= {arXiv preprint arXiv:0804.3216},
year = {2008}
}
Comments
Presented at the workshop SCADRON 70 "Scalar Mesons and Related Topics" February 11-16, 2008, at IST in Lisbon, Portugal. 6 pages, 2 figures