Exploring Jet Substructure in Semi-visible jets

Abstract

Semi-visible jets arise in strongly interacting dark sectors, where parton evolution includes dark sector emissions, resulting in jets overlapping with missing transverse momentum. The implementation of semi-visible jets is done using the Pythia Hidden valley module to duplicate the QCD sector showering. In this work, several jet substructure observables have been examined to compare semi-visible jets and light quark/gluon jets. These comparisons were performed using different dark hadron fraction in the semi-visible jets (signal). The extreme scenarios where signal consists either of entirely dark hadrons or visible hadrons offers a chance to understand the effect of the specific dark shower model employed in these comparisons. We attempt to decouple the behaviour of jet-substructure observables due to inherent semi-visible jet properties, from model dependence owing to the existence of only one dark shower model as mentioned above.

19 pages, 13 figures. Added some $\eta -\varphi$ plane plots for the area encompassed by jets. Added discussions based on SciPost referee reports

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• Leptophilic Composite Asymmetric Dark Matter and its Detection
• Equivariant, Safe and Sensitive -- Graph Networks for New Physics
• Searching for dark jets with displaced vertices using weakly supervised machine learning
• Dark Sector Showers in the Lund Jet Plane
• Triggering Dark Showers with Conditional Dual Auto-Encoders
• Autoencoders for Real-Time SUEP Detection
• Semi-visible jets + X: Illuminating Dark Showers with Radiation
• 2B or not 2B, a study of bottom-quark-philic semi-visible jets
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