Multi-lepton events at HERA
Andrea Parenti (on behalf of H1, ZEUS Collaborations)

TL;DR
This paper investigates high transverse momentum multi-lepton events at HERA, comparing experimental data with simulations, and explores the potential role of doubly-charged Higgs bosons in explaining observed anomalies.
Contribution
It provides the first detailed comparison of multi-lepton events at HERA with gamma-gamma collision simulations and analyzes the possibility of doubly-charged Higgs bosons as a source.
Findings
Measured total and differential cross sections for multi-lepton events.
Observed high invariant mass multi-electron events.
No definitive evidence for doubly-charged Higgs bosons.
Abstract
Events containing high- multi-leptons were sought at HERA by the H1 and ZEUS collaborations. Experimental data were compared to simulations of processes, and H1 extracted the total and differential cross sections of the processes. The doubly-charged Higgs, which decays into lepton pairs, was analysed by H1 as a possible source of the multi-electron events, which have been observed at high invariant masses.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Particle Accelerators and Free-Electron Lasers · Particle Detector Development and Performance
