High-Energy Photons and Leptons Interaction on Linear Colliders

Abstract

The main possibilities of investigation interaction in processes γγ−, ee−, and γe–scattering are considered. Di˙erential and total cross sections are calculated and discussed. The formulae are obtained in the Lorentz–invariant form without any approximation. The polarized asymmetry of processes are obtained. It is clear that many non-minimal gauge models provide very small deviations from Standard Model, so it is di˚cult to register them. To overcome this problem one should investigate special observables where e˙ects beyond Standard Model are more essential. Asymmetries considered in this paper are quite good for this purpose. Also it is evident that there is a large number of non-minimal gauge models each of which may be realized in nature. Many of them provide very close results, so there is a need to distinguish among such ones. This problem may be solved by investigating several types of observables for which these models provide essentially di˙erent results. Additional types of asymmetries presented in this paper may be a useful tool for solving this problem.