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CDF Note 7286 Search for New Particles decaying into High Mass Dileptons in ppbar Collisons

CDF Note 7286 Search for New Particles decaying into High Mass Dileptons in ppbar Collisons April 20, 2005. Decay Channel l=electron or muon Luminosity= 200pb Search region M ll > 150 GeV/c^2 Searched Particles

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CDF Note 7286 Search for New Particles decaying into High Mass Dileptons in ppbar Collisons

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  1. CDF Note 7286 Search for New Particles decaying into High Mass Dileptons in ppbar Collisons April 20, 2005

  2. Decay Channel l=electron or muon Luminosity= 200pb Search region Mll > 150 GeV/c^2 Searched Particles X=RPV sneutrinos, spin 0 spin1 spin 1 from E6 model techni-mesons spin1 Randall-Sundrum extra dimension graviton spin2

  3. Relevant Detector Parts COT Central Outer tracker and silicon tracker, and 1.4T superconducting magnet (for PT) CEM Central electromagnetic calorimeter (For energy of electron) PEM End plug electromagnetic calorimeter (For energy of electron) Drift chambers of muon subdetectors (Muon identification) Event Selection Dielectron events are CC(CEM-tight,CEM-loose) CP(CEM-tight, PEM-loose) PP(PEM-tight, PEM-loose) tight or loose for identification criteria; ET, tracker related

  4. Background Drell-Yan production Cosmic ray, (for muons)

  5. Conclusion No evidence for a new particle is observed Lower mass bounds are set 825 GeV/c^2 690,720,675,615,885 GeV/c^2

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