Matrix Elements of Twist-2 Operators in Quenched Chiral Perturbation Theory
Nuclear Theory
2009-11-07 v2 High Energy Physics - Lattice
High Energy Physics - Phenomenology
Abstract
We compute the leading non-analytic quark mass dependence of the matrix elements of isovector twist-2 operators between octet baryon states in quenched QCD using quenched chiral perturbation theory. There are contributions of the form m_q log m_q, in analogy with QCD, but there are also contributions of the form log m_q from hairpin interactions. The nucleon does not receive such hairpin contributions.
Keywords
Cite
@article{arxiv.nucl-th/0108042,
title = {Matrix Elements of Twist-2 Operators in Quenched Chiral Perturbation Theory},
author = {Jiunn-Wei Chen and Martin J. Savage},
journal= {arXiv preprint arXiv:nucl-th/0108042},
year = {2009}
}
Comments
16 pages, 5 eps figs., latex