Multi-lepton production at high transverse momentum at HERA

Authors
  • S. Chekanov
  • [Unknown] et al.
  • G. Grigorescu
  • A. Keramidas
Publication date 2009
Journal Physics Letters B
Volume | Issue number 680 | 1
Pages (from-to) 13-23
Organisations
  • Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for High Energy Physics (IHEF)
Abstract
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.
Document type Article
Published at https://doi.org/10.1016/j.physletb.2009.08.026
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