Search for Isolated Leptons with Missing pt and Multi-leptons at HERA

Abstract

A search for events with one or more isolated leptons in the final state is performed on a data sample collected in e+-p collisions with the H1 and ZEUS detectors at the HERA collider. The data sample corresponds to an integrated luminosity of ~1 fb-1, representing the full HERA high-energy data set. The yields of single, di- and tri-lepton events are measured and compared to the Standard Model predictions, looking for possible deviations. No significant discrepancy with respect to the Standard Model expectations is observed.

ICHEP08 proceedings, 4 pages, LaTeX, 4 eps figures; v2: cosmetic changes on header and footer