TPC dE/dx vs rigidity in 13 TeV pp collisions showing deuterons and anti-deuterons

Scope: PWG
TPC
Energy
13 TeV
System
p-p
Figure Image
Figure image (.eps)
Figure image (.pdf)
Figure Caption

TPC dE/dx vs rigidity in 13 TeV pp collisions showing deuterons and anti-deuterons 

Detail description

*Here are comments by the TPC group*

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- since this plot emphasizes the nuclei production and their assymetry in particle versus anti-particle, it would be interesting to see the total dynamic range (until channel 1200 instead of 600 in this reprsentation)

- could you try a logarithmic scale on the p/z axis? This would further emhasize the nuclei

- there seems to be a binning issue, the granularity along the dE/dx axis is too high; this leads to artificial horizontal lines which are visible in the pdf plot. Could you rebin bya factor 2 or 4 along the dE/dx axis?

- the background between particle lines should be further cleaned up; this has been done for the PDG plot and should be repeated here; this is not required for the SQM approval but should be done at a later time;

- the symbol for the pions is barely visible, the symbol for tritons is missing.

- why do have the symbols different sizes?

- ALICE performance and pp @ 13 TeV should be put in two lines and be made bigger

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TPC dE/dx vs rigidity in 13 TeV pp collisions showing deuterons and anti-deuterons 

 

Minimum Bias Trigger: kINT7

60 million events; Runs: 57

Background rejection using Utils

Vertex requirements: |Vz| < 10 cm

 Cuts: → SetMinClustersTPC (80)

 → SetMaxChi2PerClusterTPC (5)

 → SetEtaRange (-0.8,0.8)

 → SetRequireTPCRefit (kTRUE)

 → SetMaxDCAToVertexZ/XY (3.0)

 → SetAcceptKinkDaughters (kFALSE)

 → SetMaxChi2TPCConstrainedGlobal (36.)