Improving Heavy Dijet Resonance Searches Using Jet Substructure at the LHC

TL;DR

This paper explores how jet substructure techniques can improve the detection and discrimination of heavy dijet resonances at the LHC and future colliders by identifying quark and gluon jets.

Contribution

It introduces methods to utilize jet substructure for better sensitivity and discrimination of new physics signals in hadronic resonance searches.

Findings

Enhanced sensitivity in heavy resonance searches.

Improved quark-gluon jet discrimination.

Potential for better background suppression.

Abstract

The search for new physics at high energy accelerators has been at the crossroads with very little hint of signals suggesting otherwise. The challenges at a hadronic machine such as the LHC is compounded by the fact that final states are swamped with jets which one needs to understand and unravel. A positive step in this direction would be to separate the jets in terms of their gluonic and quark identities, much in a similar spirit of distinguishing heavy quark jets from light quark jets that has helped in improving searches for both neutral and charged Higgs bosons at the LHC. In this work, we utilise this information using the jet substructure techniques to comment on possible improvements in sensitivity as well as discrimination of new resonances in the all hadronic mode that would be crucial in pinning down new physics signals at HL-LHC, HE-LHC and any future 100 TeV hadron collider.