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EtMiss performance for early SUSY

EtMiss performance for early SUSY. Looking at https://twiki.cern.ch/twiki/bin/view/AtlasProtected/ SusyEtMissTaskList I think we can with not so much further effort give quite some input to this group, given their connection to the EtMiss performance group doesn’t seem to be great yet

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EtMiss performance for early SUSY

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  1. EtMissperformance for early SUSY • Looking at https://twiki.cern.ch/twiki/bin/view/AtlasProtected/SusyEtMissTaskList I think we can with not so much further effort give quite some input to this group, given their connection to the EtMiss performance group doesn’t seem to be great yet • 1 task for all analyses is of course “Look at missing ET in appropriate samples (with jet/met group)” • There is also an early data plans document, which however doesn’t state anything for EtMiss that isn’t obvious: http://indico.cern.ch/getFile.py/access?contribId=0&resId=1&materialId=1&confId=49341 • Our studies of dijet events and the impact of the jet reconstruction on EtMiss is a study of tails, we should present this in one of the next SUSY EtMiss meetings • To my mind the thing that is really missing from our side is the application of SUSY selection cuts (ideally 0 and 1 lepton) to the dijet samples and see how efficient these cuts currently are in removing tails • This combined with an outline of our plans of evaluating EtMiss in first jet data will make a perfect contribution to this group • Of course, we would also know what to look at in terms of fake EtMiss in ttbar, but this I guess would need a bit more time D.Berge - CAT SUSY

  2. Reminder: tails Example: J6 at 10 TeV Sublead jet eta • We will hopefully be in a position to know at which time the different versions of EtMiss are trustable, and what to expect from them in terms of resolution • Next meeting probably in 2-3 weeks Difference here due to applying calibration, and then adding cryostat and muon term D.Berge - CAT SUSY

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