Excited leptonic states in polarized e(-)gamma and e(+)e(-) collisions
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We analyze the capability of the next generation of linear electron-positron colliders to unravel the spin and couplings of excited leptons predicted by composite models. Assuming that these machines will be able to operate both in the e+e- and e-γ modes, we study the effects of the excited electrons of spin 1/2 and 3/2 in the reactions e-γ → e-γ and e+e- → γγ. We show how the use of polarized beams is able not only to increase the reach of these machines, but also to determine the spin and couplings of the excited states.