Abstract

We investigate the effects of unparticles on γγ→γγ scattering for the photon collider mode of the future multi-TeV e+e- linear collider. We show the effects of unparticles on the differential, and total scattering cross sections for different polarization configurations. Considering 1-loop standard model background contributions from the charged fermions and W± bosons to the cross section, we calculate the upper limits on the unparticle couplings λ0 to the photons for various values of the scaling dimension d (1<d<2) at $\sqrt{s}$ = 0.5–5 TeV.

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