Electron-electron collisions at TESLA

Abstract

Electron-electron collisions at the future TESLA linear collider is a promising complement to e+e− collisions. A critical issue for the physics potential of this option is the achievable luminosity. For e+e− collisions, the pinch effect enhances the luminosity, while due to the repelling forces for e−e− collisions, the luminosity is significantly reduced and is more sensitive to beam separations. This report discusses the e−e− option for TESLA and the expected luminosity.