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paper

Double spin asymmetry A_{LT} in direct photon production

arXiv:1203.3956 · doi:10.1016/j.physletb.2012.04.072

Abstract

We study the longitudinal-transverse double spin asymmetry $A_{LT}$ for direct photon production in nucleon-nucleon scattering by using the collinear twist-3 approach. This asymmetry, which, for instance, could be measured at RHIC, contains a complete set of collinear twist-3 correlation functions in a transversely polarized nucleon.

9 pages, 1 figure