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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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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 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
DDC:530 Physics
Language:English
Date:5 October 2009
Deposited On:18 Nov 2009 12:54
Last Modified:10 Jul 2014 16:27
Publisher:Institute of Physics Publishing
ISSN:1029-8479
Publisher DOI:10.1088/1126-6708/2009/10/013
Related URLs:http://arxiv.org/abs/0907.3627v2
Citations:Web of Science®. Times Cited: 4
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Scopus®. Citation Count: 2

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