Measuring Sparticles with the Matrix Element

TL;DR

This paper demonstrates the application of the Matrix Element Method to determine the masses of squarks and LSPs at the LHC, including methods to incorporate QCD radiation effects for improved accuracy.

Contribution

It introduces a novel application of the MEM for simultaneous squark and LSP mass measurement, with new techniques to account for QCD radiation effects.

Findings

Successful mass determination of squarks and LSPs using MEM

Inclusion of QCD radiation effects enhances measurement accuracy

Method applicable to LHC data analysis

Abstract

We apply the Matrix Element Method (MEM) to mass determination of squark pair production with direct decay to quarks and LSP at the LHC, showing that simultaneous mass determination of squarks and LSP is possible. We furthermore propose methods for inclusion of QCD radiation effects in the MEM.