04.07.95 - Muon system performance (talk for LHCC referees prepared by W.Ko, J.Rowe and G.Wrochna)

Characteristics of the CMS Muon System

  1. cover page
  2. eta coverage
  3. bending power
  4. geometrical acceptance (IMVERS=921)
  5. geometrical acceptance (IMVERS=922)
  6. absorption and radiation lengths

Background in the Muon System - sources

  1. background sources and effects
  2. particles fluxes: FLUKA + GEANT
  3. total particles fluxes: GCALOR
  4. total particles fluxes: FLUKA x 3
  5. fluxes with various simulation programs

Background in the Muon System - effects

  1. neutron hits in RPC
  2. muon secondaries in DT
  3. two hit resolution in CSC
  4. CSC trigger and neutron background

Muon trigger

  1. muon trigger principle
  2. DT and CSC trigger
  3. RPC trigger
  4. muon trigger logic
  5. muon trigger rates

Muon momentum measurement - pattern recognition

  1. explain Kalman Filter method used by Davis
  2. Pattern recognition: events from 95-001 by Padova
  3. dpt/pt vs number of stations, 2D KF
  4. dpt/pt vs number of stations, 3D KF (barrel)
  5. dpt/pt vs number of stations, 3D KF (endcap)
  6. dpt/pt vs eta, comparison of different methods

Muon momentum measurement - matching

  1. example: muons in a b-qark jet
  2. extrapolation to the tracker
  3. position matching
  4. momentum matching

Muon momentum measurement - full fit

  1. dpt/pt vs eta at 100 GeV
  2. dpt/pt vs eta at 1 TeV
  3. error estimation: cov. matrix vs residuals
  4. dp/p parametrisation

Mass resolution using the updated Momentum Resolution

  1. mass resolution: H -> 4mu
  2. mass resolution: J/psi -> 4mu
  3. mass resolution: Z' -> 2mu
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