Heavy quark production in $\gamma\gamma$ collisions

Abstract

Current theoretical framework for the calculation of heavy quark production in $\gamma\gamma$ collisions is reviewed. The importance of including direct photon contributions up to the order $\alpha^2\alpha_s^2$ and of the proper choice of renormalization and factorization scales in the evaluation of $\sigma(\gamma\gamma\to Q\bar{Q})$ is emphasized.