Matrix Elements, Parton Showers and Jet Merging: Jet Substructure and New Physics at the LHC

TL;DR

This paper compares different Monte Carlo event generators in modeling merged jets from heavy particles at the LHC, highlighting the importance of refining these models for accurate new physics searches.

Contribution

It provides a comparative analysis of Monte Carlo models for merged jet topologies, emphasizing the need for improved modeling based on Standard Model observations.

Findings

Differences observed between various Monte Carlo generators.

Highlighting the necessity for model refinement before new physics claims.

Emphasizing the role of accurate jet substructure modeling in LHC analyses.

Abstract

Events containing hadronically decaying heavy particles with large momentum, leading to so-called merged jets, are expected to play a significant role in both searches for new physics and measurements of Standard Model processes at the CERN Large Hadron Collider. In this article, a comparative study of the modeling of such merged jet topologies by different Monte-Carlo event generators is presented. The observed differences emphasize the need to refine such modeling based on the observation of Standard Model processes prior to claims of discovery.