MET induced by the neutralino by filtering out calorimetric deposits associated with the recoiling jet. A typical process without significant MET at generator level is a hadronic dijet event, commonly referred to as a QCD dijet event. In this case one may also infer a (fake) MET in an event in which no MET is expected, causing a tail in the high end of the MET distribution. Therefore, an ill-chosen time filter could degrade the discovery potential of a neutralino search by reducing the measured MET of the neutralino signal while simultanously increasing the (fake) MET of a major background.

To assess whether the chosen timing cuts induce a bias on processes with significant MET, the timing filter was applied to a sample of simulated events containing neutralinos and generated under the assumptions of $\sqrt{s}=10\TeV$ and no overlapping events ($L=10^{30}~\mathrm{cm}^{-2}\mathrm{s}^{-1}$). The selected SUSY sample was generated using ISASUSY [@cite:isasusy] and Pythia 6.4 [@cite:pythia] at a “low mass” point referred to as “LM1” [@cite:susylm1] in the phase space of one favored model of SUSY known as mSUGRA [@cite:susy]. The early discovery or exclusion of this point is potentially within reach of the LHC experiments given the integrated luminosity expected from the 