Results on searches beyond the Standard Model at HERA

TL;DR

This paper reports on searches for physics beyond the Standard Model at HERA, using phase I data, finding no evidence for new phenomena but setting limits on various theoretical models.

Contribution

First comprehensive search for multiple beyond Standard Model signals at HERA using phase I data, establishing new limits on model parameters.

Findings

No evidence for new physics observed.

Limits set on contact interactions and leptoquarks.

Constraints on R-parity violating squarks and excited fermions.

Abstract

Signals of physics beyond the Standard Model at HERA have been searched for by the H1 and ZEUS collaborations. Results are reported about searches of contact interaction effects, leptoquarks, R-parity violating squarks, excited fermions and single top production. The analyses used the data set collected during the HERA phase I, consisting in about 110 (15) pb^{-1} of e^+p (e^-p) collisions per experiment. No evidence for new physics has been found and limits have been set on the parameters of the models considered.