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Lc / D0 meson ratio in 0-10% and 30-50% central Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV (log-x)

Figure Information
Scope: PWG
PWG-HF (Heavy Flavour)
Energy
5.02 TeV
System
Pb-Pb
Figure Group
Lc production in Pb-Pb collisions at 5.02 TeV - 2018 data sample
Figure Image
Figure image (.eps)
2019-09-16-LcD_PbPb18_010_3050_Logx_shift0.00.eps
Figure image (.pdf)
2019-09-16-LcD_PbPb18_010_3050_Logx_shift0.00.pdf
Figure Caption

A comparison between the Lc / D0 ratio as a function of pT in the range 2-24 GeV/c between the measurements in 0-10% and 30-50% central Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV (2018 data sample). The plot is shown in log-x scale to highlight better low pT.

Detail description

 

 

A comparison between the Lc / D0 ratio as a function of pT in the range 2-24 GeV/c between the measurements in 0-10% and 30-50% central Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV (2018 data sample). The plot is shown in log-x scale to highlight better low pT (for animation with https://alice-figure.web.cern.ch/node/15570). The Lc points are averaged over the AdaBoost (TMVA) and XGBoost (MLHEP) methods. The D0 measurement is performed in the same data sample and rebinned to the same pT binning.

  • Data sample: LHC18q_pass1, LHC18r_pass1
  • List of runs: RunList_LHC18q_pass1_CentralBarrelTracking_hadronPID,  RunList_LHC18r_pass1_CentralBarrelTracking_hadronPID
  • Event cuts: |vtx_z| < 10 cm, trigger: kCentral or kSemiCentral
  • pp reference from preliminary analysis with 2017 pp data at 5 TeV, but for the last point, which is extrapolated (needed for f_prompt calculation.