ASSOCIATED PHOTONS AND NEW PHYSICS SIGNALS AT LINEAR COLLIDERS

Associated Photons and New Physics Signals at Linear Colliders

We study signals for beyond standard model physics and consider the virtues of single photon signals or associated photons in the final states in identifying different scenarios of new physics models in a very efficient and novel way.

Physics at Linear Colliders

Associated single photons as signals for a doubly charged scalar at linear e − e − colliders

Doubly charged scalars, predicted in many models having exotic Higgs representations, can in general have lepton-number violating (LFV) couplings. The basis of most searches for this charged scalar has been to look for its direct production and its subsequent decay to like-sign final state leptons. In this work we show that by using an associated monoenergetic final state photon seen at a futur...

γγ Physics at Linear Colliders

A high-energy lepton-lepton collider will give us a unique possibility to study eγ and γγ interactions at high energies. The high-energy photons can be generated by Compton back-scattering of laser light on the high-energy lepton beams. With slightly reduced luminosities for eγ and γγ collisions compared to the lepton-lepton collider one, unique and complementary studies can be performed. A lin...

Supersymmetry Physics at Linear Colliders

Science (fiction?) in the year 201x Supersymmetry will be discovered Physics programme of LC starts ✄ associate particle ⇔ superpartner – spins differ by 1/2 – same gauge quantum numbers – identical couplings ✄ precise measurements – masses, widths, branching ratios – cross sections, couplings – production and decay properties – mixing parameters, CP violating phases ✄ determine SUSY breaking m...