Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-23745
The H1 and ZEUS Collaborations, [including the following authors]; Aaron, F D; Abramovicz, H; Abt, I; Adamczyk, L; Adamus, M; Müller, K; Nowak, K; Robmann, P; Straumann, U; Truöl, P (2009). Multi-leptons with high transverse momentum at HERA. Journal of High Energy Physics, (10):013.
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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^. 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 100 GeV 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.
|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Physics Institute|
|Date:||05 October 2009|
|Deposited On:||18 Nov 2009 13:54|
|Last Modified:||27 Feb 2014 10:29|
|Publisher:||Institute of Physics Publishing|
|Citations:||Web of Science®. Times Cited: 2|
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