Discriminating New Physics Scenarios at NLC: The Role of Polarization

Abstract

We explore the potential of the Next Linear Collider (NLC), operating in the $eγ$ mode, to disentangle new physics scenarios on single $W$ production. We study the effects related with the exchange of composite fermion in the reaction $eγ\to W ν_e$, and compare with those arising from trilinear gauge boson anomalous couplings. We stress the role played by the initial state polarization to increase the reach of this machine and to discriminate the possible origin of the new phenomena.

26 pages, LaTeX file using ReVTeX. 10 Figures