Mass measurement in boosted decay systems at hadron colliders

TL;DR

This paper introduces a new method using the t2 variable for mass measurement in boosted decay chains at hadron colliders, demonstrating improved experimental feasibility over traditional t2-kink techniques.

Contribution

The paper presents a novel application of the t2 variable for mass measurement, enhancing experimental feasibility in boosted decay systems at hadron colliders.

Findings

t2 method improves mass measurement accuracy.

Application to chargino decay chains demonstrates practical utility.

Enhanced feasibility over t2-kink method.

Abstract

We report a new possibility of using the $\mct2$ (Constransverse mass) variable for mass measurement in single step decay chains involving missing particles with moderate transverse momentum. We show that its experimental feasibility is enhanced compared to the corresponding $\mt2$-kink method. We apply this method to reconstruct a pair of chargino decay chains.