LHEReader: Simplified Conversion from Les Houches Event Files to ROOT Format

TL;DR

LHEReader is a software tool that simplifies converting Les Houches Event files into ROOT format, enabling easier analysis of high-energy physics simulation data.

Contribution

This work introduces LHEReader, a new program that streamlines the conversion process from Les Houches Event files to ROOT format for analysis.

Findings

LHEReader performs efficient conversion of event files.

The program facilitates analysis at both parton level and after fast simulation.

Application demonstrated through ZH production simulation.

Abstract

We present the \textsc{LHEReader} program that converts an Les Houches Event file into a \Root file allowing one to subsequently analyze the file using \Root. We evaluate the performance of this conversion by simulating $pp\to jj$ and $e^+e^- \to ZH$. The application of this program is illustrated through the simulation of $pp\rightarrow ZH$, with the $Z\to\ell^+\ell^-$ and $H\to b\bar{b}$, analyzing the events at the parton level after hard-scatter event generation as well as after the stage of fast simulation using \MadAnalysis. The analysis is implemented in \Root demonstrating the use of this program. The program is available here: https://github.com/amanmdesai/LHEReader