Document Type
Article
Publication Date
12-1-2009
Keywords
Lepton-nucleon scattering
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.
Journal Title
Journal of High Energy Physics
Volume
2009
Issue
10
DOI
https://doi.org/10.1088/1126-6708/2009/10/013
First Department
Physics
Recommended Citation
Aaron, F. D.; Abramowicz, H.; Abt, I.; Adamczyk, L.; Adamus, M.; Aldaya Martin, M.; Alexa, C.; Alimujiang, K.; Andreev, V.; Antonelli, S.; Antonioli, P.; Antonov, A.; Antunovic, B.; Arneodo, M.; Asmone, A.; Aushev, V.; Bachynska, O.; Backovic, S.; Baghdasaryan, A.; Bamberger, A.; Barakbaev, A. N.; Barbagli, G.; Bari, G.; Barreiro, F.; Barrelet, E.; Bartel, W.; Bartsch, D.; Basile, M.; Begzsuren, K.; Behnke, O.; Behr, J.; and Mattingly, Margarita C. K., "Multi-leptons with High Transverse Momentum at HERA" (2009). Faculty Publications. 1856.
https://digitalcommons.andrews.edu/pubs/1856
Acknowledgements
Retrieved February 22, 2021 from https://iopscience.iop.org/article/10.1088/1126-6708/2009/10/013/pdf