CDF Note 7286 Search for New Particles decaying into High Mass Dileptons in ppbar Collisons
8
CDF Note 7286 Search for New Particles decaying into High Mass Dileptons in ppbar Collisons April 20, 2005
-
Upload
serina-stephenson -
Category
Documents
-
view
17 -
download
2
description
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 - PowerPoint PPT Presentation
Transcript of 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 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
SMZ '
llXpp
TT ,HI ZZZZ ,,,
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
Background
Drell-Yan production
Cosmic ray, (for muons)
WWtt ,,
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
HI ZZZZ ,,,
SMZ '
