Light by Light Scattering at High Energy: a Tool to Reveal New Particles
G. J. Gounaris, P. I. Porfyriadis, F. M. Renard
Abstract
We point out a few remarkable properties of the γγγγ process at high energy. They should allow to search for effects of new particles and interactions. We give illustrations with threshold effects due to pairs of new charged particles (charginos, charged Higgses, sfermions), resonance effects due to s-channel production of neutral scalars (standard or supersymmetric Higgs particles, technipions) and unitarity saturating amplitudes due to a strongly interacting sector. The use of polarized photon beams is also briefly discussed.
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