Direct Instanton Effects in Current-Current Correlators
High Energy Physics - Phenomenology
2009-10-28 v1
Abstract
We compute the effect of small-size instantons on the coefficient function of the chiral condensate in the operator product expansion of current-current correlators. Furthermore, we also compute the instanton corrections associated with four-quark and six-quark operators in the factorization approximation. We discuss the phenomenological implications of our result.
Keywords
Cite
@article{arxiv.hep-ph/9411246,
title = {Direct Instanton Effects in Current-Current Correlators},
author = {Paolo Nason and Matteo Palassini},
journal= {arXiv preprint arXiv:hep-ph/9411246},
year = {2009}
}
Comments
24 pages, Latex