Semi-visible jets, energy-based models, and self-supervision

31 Jul 2024, 12:20
20m
Palazzo Ducale (Genova, Italy)

Palazzo Ducale

Genova, Italy

Talk BSM BSM

Speaker

Luigi Favaro (ITP - University of Heidelberg)

Description

We present DarkCLR, a novel framework for detecting semi-visible jets at the LHC. DarkCLR uses a self-supervised contrastive-learning approach to create observables that are approximately invariant under relevant transformations. We use background-enhanced data to create a sensitive representation and evaluate the representations using a normalized autoencoder as a density estimator. Our results show a remarkable sensitivity for a wide range of semi-visible jets and are more robust than a supervised classifier trained on a specific signal.

Primary authors

Jan Rüschkamp Luigi Favaro (ITP - University of Heidelberg) Michael Krämer (RWTH Aachen) Tanmoy Modak (Heidelberg University) Tilman Plehn

Presentation materials