Squark Mass Measurement in the Long-lived Stau Scenario at the LHC

TL;DR

This paper proposes a method to measure left- and right-handed squark masses at the LHC within a long-lived stau scenario, utilizing hemisphere analysis to reduce combinatorial backgrounds in SUSY events.

Contribution

It introduces a novel approach for squark mass measurement in the long-lived stau scenario, including techniques to handle complex decay modes and background reduction.

Findings

Both left- and right-handed squark masses are measurable.

Hemisphere analysis effectively reduces combinatorial backgrounds.

Method demonstrates feasibility of squark mass determination in this scenario.

Abstract

The long-lived stau scenario is an interesting possibility at the LHC. We study squark mass measurements in this scenario; in particular, we show that left- and right-handed squark masses are both measurable. In SUSY events, multiple jets are expected, which become a source of combinatorial backgrounds. In order to reduce such backgrounds a hemisphere analysis is applied, and we discuss mass measurements of squarks in decay modes of left-handed squark into quark + (neutral / charged) Wino and also right-handed squark into quark + Bino.