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EnglishWe 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 lightfront 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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| Titolo: | Structure analysis of the generalized correlator of quark and gluon for a spin-1/2 target |
| Autori: | |
| Data di pubblicazione: | 2013 |
| Rivista: | |
| 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 lightfront 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. |
| Handle: | http://hdl.handle.net/11571/735819 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11571/735819
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