Signature of exotic particles in light by light scattering

TL;DR

This paper explores how exotic particles like doubly charged scalars and fermions could produce detectable signals in light-by-light scattering at future colliders, with implications for various beyond-standard-model theories.

Contribution

It provides a model-independent analysis of the effects of exotic doubly charged particles on light-by-light scattering, applicable across multiple theoretical frameworks.

Findings

Exotic particles can produce distinctive signatures in light-by-light scattering.

Mass range 0.1--1.0 TeV is accessible at future linear colliders.

Results are relevant for left-right symmetric models and supersymmetric extensions.

Abstract

We discuss the implications on light by light scattering of two kind of exotic particles: doubly charged scalar bosons and doubly charged fermions; the virtual effects of a nonstandard singly charged gauge boson are also examined. These particles, if their masses lie in the range 0.1--1.0 TeV, will have a clear signature in the future linear colliders. The present analysis has the advantage that it depends only on electromagnetic symmetry, so it is applicable to any model which predicts this class of particles. In particular, our results have interesting consequences on left-right models and their supersymmetric extension.