Simple mass reconstruction technique for supersymmetric particles at the LHC

Abstract

It is often true that an invariant mass constructed from visible decay products of a heavy particle may attain a maximum(or minimum) for a certain kinematic configuration only---this fact can be used to reconstruct relevant particle masses from observed decay product momenta of events near the invariant mass endpoint. Motivated minimal supersymmetric standard model neutralino and chargino mass reconstruction at the LHC from multilepton endstates is illustrated by way of example.