2009.02.16 pt_jet>5GeV: pre-shower sorting with new normalization

Ilya Selyuzhenkov February 16, 2009

Data sets

  • pp2006 - STAR 2006 pp longitudinal data (~ 3.164 pb^1)
    Trigger: eemc-http-mb-L2gamma [id:137641]
  • mc2006: gamma-jet+QCD jets [p6410EemcGammaFilter] events.
  • Partonic pt range 2-25 GeV.

  • pp2008 - STAR 2008 pp data
    Trigger: etot-mb-l2 [id:7]

Cuts applied

  • Di-jet events
  • Require to reconstruct photon momentum (no gamma-jet isolation cuts)
  • Gamma pt > 7GeV, jet pt > 7GeV
  • L2gamma emulation in Monte-Carlo
  • L2gamma triggered for pp2006 and pp2008 events
  • cos (phi_jet - phi_gamma) < -0.8
  • detector |eta_jet|< 0.8
  • |v_z| < 100

Figures

Each figure has:

  • pp2008 data scaled to match the integraled yield from pp2006 data
  • mc2006 stand for MC sum: QCD + gamma-jet
    Monte-Carlo results for QCD and gamma-jet samples are first
    scaled to 3.164 pb^-1 according to Pythia luminosity,
    added together, and then an additional fudge factor of 1.24 applied.
    Fudge factor is defined as pp2006 to Monte-Carlo sum ratio
    for pt_jet>7GeV and pt_gamma>7 candidates

plots for pt_gamma>7GeV, pt_jet > 5GeV

  1. All pre-shower combined: 1D distributions
  2. All pre-shower combined: 2D correlations
  3. Pre-shower sorting 1D distributions