Analyses of Long Lived Slepton NLSP in GMSB Model at Linear Collider

TL;DR

This paper analyzes the detection prospects of long-lived stau particles in GMSB models at a 500 GeV linear collider, focusing on distinguishing signals from muon background using advanced particle identification techniques.

Contribution

It provides a detailed analysis of detecting long-lived staus at a linear collider, incorporating kinematic and particle ID methods to improve signal identification.

Findings

Long-lived staus produce distinctive tracks in collider detectors.

Time of flight, dE/dX, and Cerenkov devices effectively differentiate staus from muons.

Detection feasibility depends on supersymmetry breaking scale and parameter space.

Abstract

We performed an analysis on the detection of a long lived stau at a linear collider with $\sqrt{s}=500$ GeV. In GMSB models a long lived NLSP is predicted for large value of the supersymmetry breaking scale F. Furthermore in a large portion of the parameter space this particle is a stau. Such heavy charged particles will leave a track in the tracking volume and hit the muon detector. In order to disentangle this signal from the muon background we explore kinematics and particle identification tools: time of flight device, dE/dX and Cerenkov devices.