Precision searches in dijets at the HL-LHC and HE-LHC

TL;DR

This paper evaluates the potential of the HL-LHC and HE-LHC to discover new particles decaying into jets, using simulated data to estimate exclusion limits and sensitivity improvements in various search channels.

Contribution

It provides a detailed projection of the physics reach of HL-LHC and HE-LHC for dijet resonance searches, including novel semi-inclusive strategies with leptons.

Findings

Projected exclusion limits for new massive particles in dijet channels

Enhanced sensitivity in semi-inclusive searches with leptons

Comparison of HL-LHC and HE-LHC capabilities for resonance detection

Abstract

This paper explores the physics reach of the High-Luminosity Large Hadron Collider (HL-LHC) for searches of new particles decaying to two jets. We discuss inclusive searches in dijets and b-jets, as well as searches in semi-inclusive events by requiring an additional lepton that increases sensitivity to different aspects of the underlying processes. We discuss the expected exclusion limits for generic models predicting new massive particles that result in resonant structures in the dijet mass. Prospects of the Higher-Energy LHC (HE-LHC) collider are also discussed. The study is based on the Pythia8 Monte Carlo generator using representative event statistics for the HL-LHC and HE-LHC running conditions. The event samples were created using supercomputers at NERSC.