Study of e^{+}e^{-} --> \tilde{\chi}^{+}_{1} \tilde{\chi}^{-}_{1} --> \tilde{\tau}^{+}_{1}\nu_{\tau} + \tilde{\tau}^{-}_{1}\bar{\nu}_{\tau}

TL;DR

This paper investigates how the decay of charginos into staus and neutrinos affects their production signatures at future electron-positron colliders within supersymmetric models with large tan beta.

Contribution

It provides a detailed analysis of chargino production and decay channels involving staus in high tan beta supersymmetry scenarios, highlighting altered phenomenology.

Findings

Chargino production cross sections are significantly affected by stau decay modes.

Decay chains involving staus modify expected collider signatures.

Results inform search strategies for supersymmetry at future colliders.

Abstract

In Supersymmetry with large $\tan\beta$ values, the lighter stau ($\tilde{\tau}_{1}$) may be lighter than the lightest chargino ($\tilde{\chi}^{\pm}_{1}$). The decay $\tilde{\chi}^{\pm}_{1} \to \tilde{\tau}^{\pm}_{1} \nu_{\tau}$, followed by $\tilde{\tau}^{\pm}_{1} \to \tilde{\chi}^{0}_{1} \tau$, alters a phenomenology of the chargino production. We study the chargino pair production at future $e^{+}e^{-}$ linear colliders.