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Toward modelization of quark and gluon transversity generalized parton distributions

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arxiv 1407.6119 v1 pith:RL5LFGVC submitted 2014-07-23 hep-ph hep-exnucl-exnucl-th

classification hep-phhep-exnucl-exnucl-th
keywords gpdspartondistributionsexpansionflipgeneralizedgluonhelicity
verification ladder T0 review T1 audit T2 compute T3 formal
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Quark and gluon helicity flip generalized parton distributions (GPDs) encode the information on the nucleon structure in the transversity sector. In order to build a theoretically consistent phenomenological parametrization for these hadronic matrix element within the framework of the dual parametrization of GPDs (or with the equivalent approach of the SO(3) partial waves (PW) expansion with the Mellin-Barnes integral techniques) we establish the set of combinations of parton helicity flip GPDs suitable for the expansion in the cross channel SO(3) PWs.

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