X-events and their interpretation

We point out that when doubly-charged bileptons are pair produced at the LHC, kinematics dictate that they are both almost at rest in the lab frame and therefore their decays lead to final state muons in a characteristic X-shape with only very tiny track curvature because of the high muon energies. Such X-events have essentially no Standard Model background and provide a smoking gun for the 331 model.

SEARCHES FOR NEW PHYSICS AT HIGH ENERGY COLLIDERS

Recent searches for physics beyond the Standard Model at high energy colliders are presented. The main focus is on searches for supersymmetry, extra dimensions and new gauge bosons. In all search analyses the data are found to agree well with the Standard Model background expectation and no evidence for contributions from physics beyond the Standard Model is found. The data are thus used to place limits on new physics scenarios.

PROBING CHARGINO-NEUTRALINO PRODUCTION AT THE FERMILAB TEVATRON COLLIDER IN A SUPERSYMMETRIC LEFT-RIGHT MODEL

We study production of chargino-neutralino through the process [Formula: see text] at the Fermilab Tevatron collider [Formula: see text] within the framework of the left-right supersymmetric model. We investigate various regions of parameter space accessible through a clean isolated trilepton signals from [Formula: see text] production for which the standard model background is expected to be tiny.