Multi-leptons with high transverse momentum at HERA

F.D. Aaron, P. Kooijman

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

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 lumi- nosity 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.
Original languageUndefined/Unknown
Pages (from-to)013/1-013/10
Number of pages10
JournalJournal of High Energy Physics
Volume10
Publication statusPublished - 2009

Bibliographical note

The H1 and ZEUS collaborations (ca. 200 auteurs)

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