Difference: HydjetComp (2 vs. 3)

Revision 32010-03-21 - MiheeJo

 
META TOPICPARENT name="MiheeJo"

2.8 TeV and 4 TeV Hydjet sample comparision

Introduction

Purpose of this study is to find out different characteristics of muon, J/psi and Upilon in the 4 TeV and 2.76 TeV Hydjet samples.

Data samples are located under MIT T2 servers. In the DBS, dataset name is :

  • 2.76 TeV (~ 1M events) : /Hydjet_Quenched_MinBias_2760GeV_MC_3XY_V24_GEN-SIM-RAW/davidlw-Hydjet_Quenched_MinBias_2760GeV_MC_3XY_V24_GEN-SIM-RAW-51550601a6965131c06787129d40c7a9/USER
  • 4 TeV (~ 35000 events) : /Hydjet_MinBias_4TeV/Summer09-MC_31X_V9-v1/GEN-SIM-RAW

Used program is :

Mother particle comparsion

  • Comparision :
Deleted:
<
<
    • 2.8 TeV has less mother species.
 
    • Transverse momentum (pt) trends are similar between 2.76 TeV and 4 TeV for same mom ID

Muon

pt_momid_mu_tot.png

List of all mother particle ID of muon

  • % is calculated by this formula
formula1.png

muon_momid.png

J/psi

pt_momid_jpsi_tot.png

List of all mother particle ID of J/psi

jpsi_momid.png

Upsilon

pt_momid_upsi_tot.png

Muon's rapidity, phi, pt distribution

  • Because number of total event for each sample is different, normalization is done by this formula
formula2.png

y_phi_pt_muon.png

J/psi's rapidity, phi, pt distribution

y_phi_pt_jpsi.png

Upsilon's rapidity, phi, pt distribution

y_phi_pt_upsi.png

-- MiheeJo - 21 Mar 2010

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