Compton Scattering at the NLC and Large Extra Dimensions

Abstract

We study Compton scattering, gamma e -> gamma e, in the context of the recent proposal for Weak Scale Quantum Gravity (WSQG) with large extra dimensions. It is shown that, with an ultraviolet cutoff $M_S\sim 1$ TeV for the effective gravity theory, the cross section for this process at the Next Linear Collider (NLC) deviates from the prediction of the Standard Model significantly. Our results suggest that, for typical proposed NLC energies and luminosities, WSQG can be tested in the range 4 TeV$\text{lsim}{M}_S\text{lsim}$ 16 TeV, making gamma e -> gamma e an important test channel.

Comments: Latex, 15 pages, 7 figures. New results, figures, and references added