Two Topics in QCD Sum-Rules: Bounds on Light Quark and Scalar Gluonium Masses
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
QCD Laplace sum-rules are briefly reviewed and two sum-rule applications are presented. For scalar gluonium, upper bounds on the lightest state are obtained from ratios of Laplace sum-rules, and the role of instantons and the low-energy theorem on these bounds is investigated. For the light-quark masses, fundamental inequalities for Laplace sum-rules are developed, which lead to a lower bound on the average of the up and down quark masses.
Keywords
Cite
@article{arxiv.hep-ph/0108232,
title = {Two Topics in QCD Sum-Rules: Bounds on Light Quark and Scalar Gluonium Masses},
author = {T. G. Steele and D. Harnett},
journal= {arXiv preprint arXiv:hep-ph/0108232},
year = {2007}
}
Comments
Latex2e, 17 pages. Write-up of talk presented at Ochanomizu high-energy physics workshop