Mass measurement in boosted decay systems at hadron colliders

Abstract

We report a new possibility of using the $\text{mct}2$ (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 $\text{mt}2$-kink method. We apply this method to reconstruct a pair of chargino decay chains.

Comments: 6 pages, 12 figures, published in PRD, http://link.aps.org/doi/10.1103/PhysRevD.84.035018