Difference: CorrelationTaskList (1 vs. 4)

Revision 42012-03-07 - CatherineSilvestre

Line: 1 to 1
 
META TOPICPARENT name="CathLogBook"
Changed:
<
<

Photon hadron correlation task list

>
>

Photon hadron correlations task list

 
  • pp run periods selection
    • QA calorimeter : Dana (taks 1), Xiangrong
    • Run selection with PHOS triggered : Renzhuo (task 1)

Revision 32012-03-07 - GustavoConesa

Line: 1 to 1
 
META TOPICPARENT name="CathLogBook"

Photon hadron correlation task list

  • pp run periods selection
Changed:
<
<
    • QA calorimeter : Dana (taks 1), Xiangrong
    • Run selection with PHOS triggered : Renzhuo (task 1)
>
>
    • QA calorimeter : Dana (taks 1), Xiangrong
    • Run selection with PHOS triggered : Renzhuo (task 1)
 
    • QA TPC : What is the TPC performance? Check RTC / run
Changed:
<
<
  • pp charged track selection, ESD-AOD : Dana (task 2)
>
>
  • pp (PbPb) charged track selection, ESD-AOD : Dana (task 2)
 
    • fake tracks at high pt
    • find best selection criteria ( hybrid tracks as jet and correlation groups ?)
    • define track momentum ranges and acceptance
      • We should define the region in eta where we want to correlate with tracks
      • Is a maximum pT cut needed to avoid fakes ?
  • pp trigger particle selection
Changed:
<
<
    • study the selection of the trigger particle
    • trigger region and associated pt bins: Nicolas (task2)
      • Correlation ranges in xt and zt
>
>
    • study the selection (pt, eta ranges) of the trigger particle
    • trigger region and associated pt bins: Nicolas (task2)
      • Correlation ranges in xE and zT
 
      • pT reach, fake tracks at high pT
  • MC productions
Changed:
<
<
  • EMCal clusterization (for PbPb, studies to be done)
    • Pi0 analysis and shower shape : Gustavo (done)
    • Photons : Gustavo (done)
    • Pi0/Eta event by event via invariant mass : V1+unfolding needs a final check.
>
>
    • Selection of available MC runs suitable for correlation studies
  • EMCal clusterization (for PbPb, more studies to be done)
    • Pi0 analysis : V1+unfolding needs a final check Gustavo (next week)
 
    • Pi0/Eta event by event via cluster splitting with V1 : check (?)
Changed:
<
<
    • EMCal charged clusters vetoing (further checks with data driven cluster selection in PbPb are needed)
    • Neutral meson identification event by event via pair cuts : Gustavo (done),
>
>
    • EMCal charged clusters vetoing
      • pp : Gustavo (done),
      • PbPb : further checks with data driven cluster selection in PbPb are needed
    • Neutral meson identification event by event via pair cuts : Tuning needed
      • check purity of mass cut range, variation with energy might be needed
 
      • the aperture angle need more checks
    • Neutral meson identification via cluster splitting in EMCAL
Changed:
<
<
      • for E< 20 GeV: Gustavo (done)
      • Splitting at high energy (E>20 GeV) of clusters might introduce too much contamination from wrong splits. It needs a careful look
>
>
      • Need realistic MC for final assesment
      • for E< 20 GeV: Gustavo (done)
      • Splitting at high energy (E>20 GeV) of clusters might introduce too much contamination from wrong splits. It needs a careful look
 
  • Photon selection / shower shape
Changed:
<
<
    • MC tuning for photon pid: Nicolas (task 1), Mauro (task 1)
>
>
    • MC tuning for photon pid: Nicolas (task 1), Mauro (task 1)
 
      • Cut on pt of particles in cone
      • a la Mauro : sum of the energy in trigger cone and background region, subtract and apply a cut on the remaining energy
      • What MC can be used for PID studies or correlation studies ?
      • Need to revise, adapt to the new mixing frame, or to use a "hand made mixing" like for pi0 analysis. If needed...
    • isolation
Changed:
<
<
      • Isolation with track, clusters or tracks+clusters or just cells : Nicolas (task 3)
      • quantify impact of the acceptance (density method) : Nicolas
>
>
      • Isolation with track, clusters or tracks+clusters or just cells : Nicolas (task 3)
      • quantify impact of the acceptance (density method) : Nicolas
 
      • what is the effect on the efficiency
      • Effect of fiducial cuts on isolation decay/pi0
      • how to estimate systematic errors
Changed:
<
<
      • impact of QA on isolation Alexis
      • isolation with method 2 : Mauro (task 2)
>
>
      • impact of QA on isolation Alexis
      • isolation with method 2 : Mauro (task 2)
 
      • Systematic studies to be (re)done in pp (and PbPb separatedly) using data driven methods (decay photon, or pi0 cluster identification) or MC (embedded).
      • Do we need to apply flow corrections? If we concentrate in high pT maybe not.
    • Converted photon id (needed ?)
Changed:
<
<
    • track matching : Gustavo
>
>
    • track matching : Gustavo
 
      • what particles are in the cone ? good clusters all have a track matched ?
  • Efficiency
    • Pi0, eta and decay photon tagging
      • check systematics and efficiency of EMCal cuts
Changed:
<
<
      • efficiency, purity and background estimation : Xiangrong (task 1)
>
>
      • efficiency, purity and background estimation : Xiangrong (task 1)
 
    • (need to check in PbPb)
Changed:
<
<
    • Azimuthal eff correction : Dana (task 3)
>
>
    • Azimuthal eff correction : Dana (task 3)
 
  • Embedding :This might need of a common production and discussion with other groups (PWGJE, PWGCF)
  • Background and systematic uncertainties
    • trigger : decay and hadron contamination
      • need simulations with realistic pi0 spectrum
      • how to propagate the estimated background
Changed:
<
<
    • xt, zt; how to estimate syst uncertainties due to background and underlying event subtraction : Nicolas (task 4 : xE, zT systematic errors, contamination estimation)
>
>
    • xt, zt; how to estimate syst uncertainties due to background and underlying event subtraction : Nicolas (task 4 : xE, zT systematic errors, contamination estimation)
 
    • delta phi
      • pedestal subtraction : di hadron paper uses 3 different approaches. Avoid mixed events unless non uniform phi of tracks
      • cluster-track correlation eff estimation
Line: 67 to 70
 
        • Contribution to flow ?
        • track eff : check eta-phi eff for diff pt and not integrated
        • how to estimate syst uncertainty due to background ?
Changed:
<
<
    • non-Pi0 band correlations vs pi0 band : Hongsheng (task 1) and Xiangrong (task 2)
>
>
    • non-Pi0 band correlations vs pi0 band : Hongsheng (task 1) and Xiangrong (task 2)
 
  • Comparison to simulation, to 2.76 pp data ?

photon spectra

Changed:
<
<
  • Triggered spectra normalization : Alexis (task 2)
  • Direct photon predictions : Alexis (task 2)
  • Direct photon INCNLO predictions : Hugues (task 1)
  • QA : Marie (task 1)
  • time cuts : Marie (task 2)

>
>
  • Triggered spectra normalization : Alexis (task 2)
  • Direct photon predictions : Alexis (task 2)
  • Direct photon INCNLO predictions : Hugues (task 1)
  • QA : Marie (task 1)
  • time cuts : Marie (task 2)
  -- CatherineSilvestre - 06-Mar-2012 \ No newline at end of file

Revision 22012-03-06 - CatherineSilvestre

Line: 1 to 1
 
META TOPICPARENT name="CathLogBook"

Photon hadron correlation task list

  • pp run periods selection
Line: 26 to 26
 
    • Neutral meson identification event by event via pair cuts : Gustavo (done),
      • the aperture angle need more checks
    • Neutral meson identification via cluster splitting in EMCAL
Changed:
<
<
      • for E< 20 GeV: Gustavo (done)
>
>
      • for E< 20 GeV: Gustavo (done)
 
      • Splitting at high energy (E>20 GeV) of clusters might introduce too much contamination from wrong splits. It needs a careful look
  • Photon selection / shower shape
    • MC tuning for photon pid: Nicolas (task 1), Mauro (task 1)

Revision 12012-03-06 - CatherineSilvestre

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="CathLogBook"

Photon hadron correlation task list

  • pp run periods selection
    • QA calorimeter : Dana (taks 1), Xiangrong
    • Run selection with PHOS triggered : Renzhuo (task 1)
    • QA TPC : What is the TPC performance? Check RTC / run
  • pp charged track selection, ESD-AOD : Dana (task 2)
    • fake tracks at high pt
    • find best selection criteria ( hybrid tracks as jet and correlation groups ?)
    • define track momentum ranges and acceptance
      • We should define the region in eta where we want to correlate with tracks
      • Is a maximum pT cut needed to avoid fakes ?
  • pp trigger particle selection
    • study the selection of the trigger particle
    • trigger region and associated pt bins: Nicolas (task2)
      • Correlation ranges in xt and zt
      • pT reach, fake tracks at high pT
  • MC productions
  • EMCal clusterization (for PbPb, studies to be done)
    • Pi0 analysis and shower shape : Gustavo (done)
    • Photons : Gustavo (done)
    • Pi0/Eta event by event via invariant mass : V1+unfolding needs a final check.
    • Pi0/Eta event by event via cluster splitting with V1 : check (?)
    • EMCal charged clusters vetoing (further checks with data driven cluster selection in PbPb are needed)
    • Neutral meson identification event by event via pair cuts : Gustavo (done),
      • the aperture angle need more checks
    • Neutral meson identification via cluster splitting in EMCAL
      • for E< 20 GeV: Gustavo (done)
      • Splitting at high energy (E>20 GeV) of clusters might introduce too much contamination from wrong splits. It needs a careful look
  • Photon selection / shower shape
    • MC tuning for photon pid: Nicolas (task 1), Mauro (task 1)
      • Cut on pt of particles in cone
      • a la Mauro : sum of the energy in trigger cone and background region, subtract and apply a cut on the remaining energy
      • What MC can be used for PID studies or correlation studies ?
      • Need to revise, adapt to the new mixing frame, or to use a "hand made mixing" like for pi0 analysis. If needed...
    • isolation
      • Isolation with track, clusters or tracks+clusters or just cells : Nicolas (task 3)
      • quantify impact of the acceptance (density method) : Nicolas
      • what is the effect on the efficiency
      • Effect of fiducial cuts on isolation decay/pi0
      • how to estimate systematic errors
      • impact of QA on isolation Alexis
      • isolation with method 2 : Mauro (task 2)
      • Systematic studies to be (re)done in pp (and PbPb separatedly) using data driven methods (decay photon, or pi0 cluster identification) or MC (embedded).
      • Do we need to apply flow corrections? If we concentrate in high pT maybe not.
    • Converted photon id (needed ?)
    • track matching : Gustavo
      • what particles are in the cone ? good clusters all have a track matched ?
  • Efficiency
    • Pi0, eta and decay photon tagging
      • check systematics and efficiency of EMCal cuts
      • efficiency, purity and background estimation : Xiangrong (task 1)
    • (need to check in PbPb)
    • Azimuthal eff correction : Dana (task 3)
  • Embedding :This might need of a common production and discussion with other groups (PWGJE, PWGCF)
  • Background and systematic uncertainties
    • trigger : decay and hadron contamination
      • need simulations with realistic pi0 spectrum
      • how to propagate the estimated background
    • xt, zt; how to estimate syst uncertainties due to background and underlying event subtraction : Nicolas (task 4 : xE, zT systematic errors, contamination estimation)
    • delta phi
      • pedestal subtraction : di hadron paper uses 3 different approaches. Avoid mixed events unless non uniform phi of tracks
      • cluster-track correlation eff estimation
        • how ?
        • how to propagate to Iaa ?
        • Contribution to flow ?
        • track eff : check eta-phi eff for diff pt and not integrated
        • how to estimate syst uncertainty due to background ?
    • non-Pi0 band correlations vs pi0 band : Hongsheng (task 1) and Xiangrong (task 2)
  • Comparison to simulation, to 2.76 pp data ?

photon spectra

  • Triggered spectra normalization : Alexis (task 2)
  • Direct photon predictions : Alexis (task 2)
  • Direct photon INCNLO predictions : Hugues (task 1)
  • QA : Marie (task 1)
  • time cuts : Marie (task 2)

-- CatherineSilvestre - 06-Mar-2012

 
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