Heavy Quark Pair Production in Polarized Photon--Photon Collisions
  We present the next-to-leading-order cross sections of the heavy quark-antiquark pair production in polarized photon-photon collision for the general case of photon polarizations. The numerical results for top-antitop production cross sections together with production asymmetries are obtained for linearly polarized photon-photon collisions, including one-loop QCD radiative corrections. 
George Jikia (Albert--Ludwigs--Universitat, Freiburg) and Avto   Tkabladze (DESY, Zeuthen)