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Journal Articles Journal of High Energy Physics Year : 2013

Structure analysis of the generalized correlator of quark and gluon for a spin-1/2 target

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.

Dates and versions

in2p3-00854628 , version 1 (27-08-2013)

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C. Lorcé, B. Pasquini. Structure analysis of the generalized correlator of quark and gluon for a spin-1/2 target. Journal of High Energy Physics, 2013, 09, pp.138. ⟨10.1007/JHEP09(2013)138⟩. ⟨in2p3-00854628⟩
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