Polynomiality sum rules for generalized parton distributions of spin-1 targets
arXiv:1812.01511 · doi:10.1103/PhysRevD.99.094035
Abstract
We present the polynomiality sum rules for all leading-twist quark and gluon generalized parton distributions (GPDs) of spin-1 targets such as the deuteron nucleus. The sum rules connect the Mellin moments of these GPDs to polynomials in skewness parameter $ξ$, which contain generalized form factors (GFFs) as their coefficients. The decompositions of local currents in terms of generalized form factors for spin-1 targets are obtained as a byproduct of this derivation.
21 pages, minor revisions, published in PRD