%0 Journal Article %T Polarized Photoproduction of Heavy Quarks in Next-to-Leading Order %A A. P. Contogouris %A Z. Merebashvili %A G. Grispos %J Physics %D 2000 %I arXiv %R 10.1016/S0370-2693(00)00509-8 %X The results of a next-to-leading order calculation of heavy quark production in longitudinally polarized photon-nucleon collisions are presented. At c.m. energy $\sqrt{S}=10$ GeV, for $\vec \gamma +\vec p \to c+X$, cross sections differential in the transverse momentum and rapidity of the charmed quark $c$ and the corresponding asymmetries are presented; also, as functions of $\sqrt{S}$, integrated cross sections, $K$-factors and the corresponding asymmetries are given. Errors in the asymmetries are estimated and the possibility to distinguish between three scerarios differing essentially in the polarized gluon distribution is discussed. %U http://arxiv.org/abs/hep-ph/0003204v1