Multi-lepton production at high transverse momentum at HERA

Journal article

A search for events containing two or more high-transverse-momentum isolated leptons has been performed in ep collisions with the ZEUS detector at HERA using the full collected data sample, corresponding to an integrated luminosity of 480 pb -1. The number of observed events has been compared with the prediction from the Standard Model, searching for possible deviations, especially for multi-lepton events with invariant mass larger than 100 GeV. Good agreement with the Standard Model has been observed. Total and differential cross sections for di-lepton production have been measured in a restricted phase space dominated by photon-photon collisions. © 2009 Elsevier B.V.

Authors: Chekanov, S; Derrick, M; Magill, S; Musgrave, B; Nicholass, D

• Journal: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
• Volume: 680
• Issue: 1
• Pages: 13-23
• Publication date: 2009-09-14
• DOI: 10.1016/j.physletb.2009.08.026
• ISSN: 0370-2693
• Language: English