"Subthreshold" $e^{+}{e}^{-}$ pairs production on photon colliders

Abstract

In this paper we consider the process of "subthreshold" electron-positron pairs creation in the region of laser conversion. The total number of positrons and their distribution are obtained. This phenomena is offered for use as a good test to examine nonlinear effects of quantum electrodynamics on TESLA.

Comments: LaTex, 9 pages, 7 Postscript figures