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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.
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http://hal.in2p3.fr/in2p3-00854628
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, August 27, 2013 - 4:48:56 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:24 PM

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C. Lorcé, B. Pasquini. Structure analysis of the generalized correlator of quark and gluon for a spin-1/2 target. Physical Review C, American Physical Society, 2013, 88, pp.034319. ⟨10.1103/PhysRevC.88.034319⟩. ⟨in2p3-00854628⟩

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