Investigating vector-like leptons decaying into an electron and missing transverse energy in e$^{+}$ e$^{-}$ collisions with $\sqrt{s} = 500$ GeV at the ILC

TL;DR

This paper investigates the potential to detect vector-like leptons decaying into electrons and missing energy at the ILC, using simulations to set exclusion limits on their mass in a dark matter context.

Contribution

It presents a simulation-based analysis of vector-like lepton decays at the ILC, establishing potential exclusion limits for their mass in a dark matter model.

Findings

Sets 95% CL exclusion limits on vector-like lepton mass.

Analyzes signal topology with missing transverse energy and dileptons.

Uses Monte Carlo simulations at 500 GeV with 1000 fb$^{-1}$ luminosity.

Abstract

This analysis focuses on probing the lepton portal dark matter using Monte Carlo simulated samples from electron-positron collisions at the International Linear Collider (ILC) of 500 GeV center of mass energy with an integrated luminosity of 1000 fb$^{-1}$. The study examines a benchmark scenario where the dark matter is a scalar particle produced as a daughter particle of the vector-like lepton. The signal topology consists of missing transverse energy and dilepton. If no new physics is discovered,the study sets 95\% confidence level exclusion limits on the mass of vector-like leptons.