Dijet+MET Events induced by Cosmic Ray Muons

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Presentation transcript:

Dijet+MET Events induced by Cosmic Ray Muons March 7, 2009 Data Sample: Inclusive Jet Trigger with ET > 100 GeV Event Selection |zvtx| < 60 cm & Njet = 2 JetClu (Rjet = 0.7) with the CDF standard JES corrections ET > 160 GeV, > 60 GeV, < 25 GeV with |h| < 2 and at least one jet with |h| < 1.1 0.15 < EEMF < 0.85 Cosmic ray muon w/o ECHF cut (> 0.15) m References for Cleanup Cuts (EEMF and ECHF) : "Search for extra dimensions in mono-jet+MET signatures,“ PRL 97, 171802 (2006) and combined photon/jet+MET, PRL 101, 181602 (2008) "Search for squarks and gluinos in multi-jets + MET final state,"  arXiv:0811.2512 (appearing on PRL the 11th of March)

jj +ETmiss Junk events, but rejected by a charge fraction cut ET(j1) = 267 GeV ET(j2) = 263 GeV

Appendix: Jet Cleanup Variables (Loop over all jets with ET>25 GeV) Event EM Fraction: Event Charge Fraction: (Loop over all jets with ET>25 GeV)

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