Light by Light Scattering at High Energy: a Tool to Reveal New Particles

Details Light by Light Scattering at High Energy: a Tool to Reveal New Particles Light by Light Scattering at High Energy: a Tool to Reveal New Particles

1998-12-16

arxiv.org/abs/hep-ph/9812378v3

Phys.Lett. B452 (1999) 76-82; Erratum-ibid. B513 (2001) 431

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages and 3 figures, typos corrected. e-mail: renard@lpm.univ-montp2.fr

Scientific paper

10.1016/S0370-2693(99)00171-9

We point out a few remarkable properties of the $\gamma\gamma\to\gamma\gamma$ 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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