Signals for supersymmetry in photon photon scattering

We introduce the theoretical framework for analysing photon photon scattering due to electron positron collisions. The structure function F2γ is introduced along with its corresponding evolution using the DGLAP equations. The possible supersymmetric contributions to this evolution are introduced with relevance to the next generation of high energy linear colliders. We numerically evolve virtual photon parton densities up to the SUSY threshold and higher using coupled inhomogeneous DGLAP differential equations. An effort is made to include the squark threshold effect in such a way that both the renormalization group equations are satisfied and the perturbative calculation is reproduced. The difference to F2γ due to SUSY dependent splitting functions is examined. Virtual SUSY corrections to this evolution procedure are then examined below and above the squark threshold. Finally a calculation of the amount events we might expect for chargino production is carried out. The feasibility of this process as a signal for SUSY can then be assessed. (author)