Searches for New Physics in ep Collisions at HERA

TL;DR

This paper reports on a decade of searches for new physics phenomena beyond the Standard Model in electron-proton collisions at HERA, including leptoquarks, gravitinos, monopoles, and other high-energy events.

Contribution

It presents comprehensive experimental results from HERA's extensive data set, covering multiple search channels for new physics beyond the Standard Model.

Findings

No significant deviations from the Standard Model observed.

Constraints set on leptoquark and gravitino models.

Limits established on magnetic monopole production.

Abstract

Recent results from searches for physics beyond the Standard Model (SM) in electron/positron-proton collisions at HERA at center-of-mass energies of 300 and 320 GeV are presented. They were performed on a data sample collected in the period 1994-2004 by the H1 and ZEUS collaborations. The data have been analysed searching for leptoquarks, light gravitinos in R-parity violating supersymmetric models and magnetic monopoles. Results of a general search for new phenomena at high transverse momentum and of a dedicated search for events with isolated leptons and missing transverse momentum are also reported.