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

[en] 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 correla- tor. 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.

Disciplines :

Physics

Author, co-author :

Lorce, Cédric ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Physique des astroparticules

Pasquini, B.

Language :

English

Title :

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

Publication date :

2013

Journal title :

Journal of High Energy Physics

ISSN :

1126-6708

eISSN :

1029-8479

Publisher :

Institute of Physics Publishing (IOP), Bristol, United Kingdom

Volume :

1309

Pages :

138

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 02 December 2013

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41 (8 by ULiège)

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210 (1 by ULiège)

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109

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