Telescoping jet substructure

TL;DR

This paper presents a new jet substructure technique called telescoping subjets that improves identification of boosted W boson and top quark jets by analyzing the variability of observables across phase-space boundaries, demonstrating robustness and potential for systematic jet analysis.

Contribution

The paper introduces a novel telescoping jet substructure method that leverages variability in observables for improved heavy particle tagging, extending the toolkit for jet analysis.

Findings

High performance in boosted W and top jet identification

Robustness against finite detector resolution

Potential for extension to jet grooming and other observables

Abstract

We introduce a novel jet substructure method which exploits the variation of observables with respect to a sampling of phase-space boundaries quantified by the variability. We apply this technique to identify boosted W boson and top quark jets using telescoping subjets which utilizes information coming from subjet topology and that coming from subjet substructure. We find excellent performance of the variability, in particular its robustness against finite detector resolution. The extension to telescoping jet grooming and other telescoping jet substructure observables is also straightforward. This method provides a new direction in heavy particle tagging and suggests a systematic approach to the decomposition of jet substructure.