Comparative analysis of the four-fermion contact interactions at e^+e^- and e^-e^- colliders

Abstract

We study electron-electron contact-interaction searches in the process e^+e^-\to e^+e^- at a future e^+e^- Linear Collider with both beams longitudinally polarized. We evaluate the model-independent constraints on the coupling constants, emphasizing the role of beam polarization, and make a comparison with the case of e^+e^-\to\mu^+\mu^-.

Comments: 5 pages with 3 figures. Talk given at the VII-th International School - Seminar ``The Actual Problems of Microworld Physics'', Gomel, 28 July - 8 August, 2003