Structure analysis of the generalized correlator of quark and gluon for a spin-1/2 target
High Energy Physics - Phenomenology
2015-06-16 v1 High Energy Physics - Experiment
Nuclear Theory
Abstract
We analyze the structure of generalized off-diagonal and transverse-momentum dependent quark-quark and gluon-gluon correlators for a spin-1/2 hadron. Using the light-front formalism, we provide a parametrization in terms of the parton generalized transverse-momentum dependent distributions that emphasizes the multipole structure of the correlator. The results for the quark-quark correlation functions are consistent with an alternative parametrization given in terms of Lorentz covariant structures. The parametrization for the gluon-gluon generalized correlator is presented for the first time and allows one to introduce new correlation functions which can be relevant for phenomenological applications.
Keywords
Cite
@article{arxiv.1307.4497,
title = {Structure analysis of the generalized correlator of quark and gluon for a spin-1/2 target},
author = {C. Lorcé and B. Pasquini},
journal= {arXiv preprint arXiv:1307.4497},
year = {2015}
}
Comments
30 pages, 1 figure, 2 tables