Probing Light Stop Pairs at the LHC

TL;DR

This paper investigates the detection prospects of light stop pairs at the LHC and ILC, considering various SUSY parameters, current experimental limits, and simulation results, highlighting challenges and potential future sensitivities.

Contribution

It provides a detailed analysis of light stop pair signals under non-universal SUSY parameters and evaluates the detection capabilities of both LHC and ILC.

Findings

Stop pair signals often evade current LHC cuts.

ILC can detect these scenarios with tens of fb$^{-1}$.

Current LHC searches have limited sensitivity to certain SUSY configurations.

Abstract

In this work, we study the light stop pair signals at the LHC. We explore the SUSY parameter space with non-universal gaugino and third generation masses at the GUT scale. Recent LHC SUSY search results based on 35pb$^{-1}$ and 1fb$^{-1}$ of data are implemented to put the limits on stop pair events. The dark matter relic density and direct detection constraints are also taken into account. Detailed simulations on the signals and background for some benchmark points are performed, and it is found that the stop pair signals usually escape the LHC search if the present cut conditions are used. We also explore the potential and sensitivity of ILC to probe such scenarios. It is found that the ILC can detect them with an integrated luminosity of a few tens of fb$^{-1}$.