Search for Isolated Leptons with Missing pt and Multi-leptons at HERA
M. Turcato (Hamburg University) (for the H1 Collaboration, ZEUS, Collaboration)

TL;DR
This paper reports a comprehensive search for isolated leptons with missing transverse momentum and multi-lepton events in HERA e±-p collision data, comparing observations to Standard Model predictions to identify potential new physics signals.
Contribution
It provides the first full analysis of the complete HERA high-energy data set for isolated leptons and multi-leptons, testing the Standard Model with no observed deviations.
Findings
No significant deviation from Standard Model predictions.
Measured yields of single, di-, and tri-lepton events consistent with expectations.
Established limits on new physics scenarios involving leptons.
Abstract
A search for events with one or more isolated leptons in the final state is performed on a data sample collected in e+-p collisions with the H1 and ZEUS detectors at the HERA collider. The data sample corresponds to an integrated luminosity of ~1 fb-1, representing the full HERA high-energy data set. The yields of single, di- and tri-lepton events are measured and compared to the Standard Model predictions, looking for possible deviations. No significant discrepancy with respect to the Standard Model expectations is observed.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Computational Physics and Python Applications
