Spin and Chirality Determination of Superparticles with Long-Lived Stau at the LHC

TL;DR

This paper proposes a method to determine the spins and chiralities of superparticles using long-lived staus at the LHC, aiding in distinguishing supersymmetry from other new physics models.

Contribution

It introduces a novel approach to analyze superparticle properties via long-lived staus, enhancing SUSY characterization and differentiation from alternative theories.

Findings

Method to extract spin and chirality information of superparticles.

Ability to distinguish SUSY from extra dimension models.

Potential for improved SUSY detection at the LHC.

Abstract

Long-lived stau shows up in various supersymmetric models, like gauge-mediated supersymmetry (SUSY) breaking model. At the LHC experiment, long-lived stau is useful not only for the discovery of SUSY signals but also for the study of the detailed properties of superparticles. We discuss a method to obtain information on spins and chiralities of superparticles in the framework with long-lived stau. We also show that such a study can be used to distinguish SUSY model from other models of new physics, like the universal extra dimension model.