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Primary deuteron fraction extraction in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$=5.02 TeV

Figure Information
Scope: PWG
PWG-LF (Light Flavour Spectra)
Energy
5.02 TeV
System
Pb-Pb
Figure Group
(Anti-)Nuclei production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$=5.02 TeV and pp collisions at $\sqrt{s}$=13 TeV [SQM17]
Figure Image
Figure image (.eps)
2017-Jul-04-dcaxy.eps
Figure image (.pdf)
2017-Jul-04-dcaxy.pdf
Figure Caption

Fit to the DCA$_{xy}$ distribution (black points) of deuteron candidates with transverse momentum between 1.1 and 1.2 GeV/c. The measurement is perfomed in the 5% most central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$=5.02 TeV. The blue line is the fit result and it represents the sum of the primary particle component (green) and secondary particle one (red).

Detail description
  • Data sample: LHC15o (low_IR, high_IR_pass1, high_IR_pidfix)
  • List of runs: DPG hadron PID
  • Event cuts: AliEventCut standard
  • Track cuts: AOD filter bit 4 + DCA_z < 1 cm + TPC PID clusters > 70