Top Quark Threshold Production at a gamma-gamma Collider at Next-to-Next-to-Leading Order
Andrzej Czarnecki, Kirill Melnikov
Abstract
The next-to-next-to-leading order (NNLO) QCD corrections to top quark threshold pair production in gamma-gamma collisions are computed. The NNLO effects turn out to be significant. Threshold cross sections in gamma-gamma and e+e- collisions are compared.
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