User

Roles
Anonymous

Isolated photon purity using the template fit method in pp and p-Pb at sqrt(s) = 5.02 TeV

Figure Information
Scope: PWG
PWG-GA (Photons, Neutral Mesons)
Energy
5.02 TeV
System
p-p
p-Pb
Figure Group
Paper Figures: Measurement of isolated photon–hadron correlations in pp and p–Pb collisions at 5TeV
Figure Image
Figure image (.eps)
2020-06-01-purity.eps
Figure image (.pdf)
2020-06-01-2020-06-01-purity.pdf
Figure Caption

Purity of the isolated photon sample as a function of transverse momentum for pp (red) and p–Pb (blue) data. The error bars represent statistical uncertainties only. The red shaded area represents systematic uncertainties in pp, while the blue empty boxes represent systematic uncertainties in p–Pb. The smooth lines correspond to a three-parameter error function fit to the data.

Detail description

The photon purity is calculated using the template fit method which uses a linear combition of signal template and background template to fit the shower shape distribution in data. 

  • Keywords: EMCal, DCal, isolated photon, purity
  • Fig 2 in paper
  • Data sample: LHC13def, LHC17q
  • Reco pass: pass1_CENT_wSDD
  • MC: gamma Jet LHC17g6a1, LHC18b10a(b)_calo ; JetJet: LHC17g6a3, LHC18l2a(b)