Handling jets + missing E _T channel using inclusive m _T2

The ATLAS and CMS experiments at the Large Hadron Collider (LHC) may discover the squarks (qℳ) and gluino (qℳ) of the minimal supersymmetric standard model (MSSM) in the early stage of the experiments if their masses are lighter than 1.5 TeV. In this paper we propose the sub-system m _T2 variable (m ^sub _T2), which is sensitive to the gluino mass when m _qℳ>m _qℳ. Using it with the inclusive m _T2 distribution proposed earlier, and masses can be determined simultaneously in the early stage of the experiments. Results of Monte Carlo simulations at sample MSSM model points are presented both for signal and background.