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.
|PDF (Verlags-PDF) - Registered users only|
PDF (Accepted manuscript, Version 1)
PDF (Accepted manuscript, Version 2)
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:||16 May 2013 22:20|
|Publisher:||Institute of Physics Publishing|
Users (please log in): suggest update or correction for this item
Repository Staff Only: item control page