Article
Multi-leptons with High Transverse Momentum at HERA
Journal of High Energy Physics
Document Type
Article
Publication Date
12-1-2009
Keywords
- Lepton-nucleon scattering
Disciplines
Abstract
Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb-1. The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e+p collision data with a scalar sum of the lepton transverse momenta above 100GeV while 1.94 ± 0.17 events are expected. Such events are not observed in e-p collisions for which 1.19 ± 0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions. © SISSA 2009.
DOI
https://doi.org/10.1088/1126-6708/2009/10/013
First Department
Physics
Acknowledgements
Retrieved February 22, 2021 from https://iopscience.iop.org/article/10.1088/1126-6708/2009/10/013/pdf
Citation Information
F. D. Aaron, H. Abramowicz, I. Abt, L. Adamczyk, et al.. "Multi-leptons with High Transverse Momentum at HERA" Journal of High Energy Physics Vol. 2009 Iss. 10 (2009) Available at: http://works.bepress.com/margarita_mattingly/163/