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Transverse momentum spectra of anti-hypertriton in 10-40% centrality class in Pb-Pb at 5.02 TeV

Figure Information
Scope: PWG
PWG-LF (Light Flavour Spectra)
Energy
5.02 TeV
System
Pb-Pb
Figure Group
(Anti-)hypertriton production via 2 body decay channel in Pb-Pb at $\sqrt{s_{NN}}$ = 5.02 TeV [QM18]
Figure Image
Figure image (.eps)
2018-May-09-ptSpectrum_A_1040_5TeV.eps
Figure image (.pdf)
2018-May-09-ptSpectrum_A_1040_5TeV.pdf
Figure Caption

Transverse momentum spectra of anti-hypertriton (blue) only in 10-40% centrality class, obtained by analysing the 2015 data sample of Pb-Pb collisions at 5.02 TeV, which consists in 104.9 x 10^{6} selected events. Fit performed with the BlastWave distribution from the He3 spectra (10-40%) and with the normalization as only free parameters.

Detail description

Transverse momentum spectra of anti-hypertriton (blue) only in 10-40% centrality class, obtained by analysing the 2015 data sample of Pb-Pb collisions at 5.02 TeV, which consists in 104.9 x 10^{6} selected events. Fit performed with the BlastWave distribution from the He3 spectra (10-40%) and with the normalization as only free parameters.

  • Data sample: LHC15o (lowIR, highIR, highIR_pidfix)
  • Runlist: DPG Central Barrel Tracking (full and reduced TPC acceptance)
  • Event cut: AliEventCuts class standard selection
  • Trigger: kINT7; Centrality: 0-90%

Track selections applied to the daughter tracks (3He + pi^{-} and anti-3He + pi^{+}):

  • TPCrefit: kTRUE
  • Reject kink daughters
  • Number of TPC clusters > 70
  • chi2/clusters < 5
  • pseudorapidity |eta| < 0.9
  • TPC PID: |n-sigma_pion| < 3, |n-sigma_helium3| < 3