User

Roles
Anonymous

Constraints of (anti-)3He inelastic cross-section on ALICE detector material with <A> = 34.7 and <Z> = 16.1

Figure Information
Scope: PWG
PWG-LF (Light Flavour Spectra)
Energy
5.02 TeV
System
Pb-Pb
Figure Group
Anti-matter interaction cross-sections with ALICE material
Figure Image
Figure image (.eps)
2021-01-18_anti-3He_xs_constr_PbPb.eps
Figure image (.pdf)
2021-01-18_anti-3He_xs_constr_PbPb.pdf
Figure Caption

(anti-)3He inelastic interaction cross-section per averaged chemical element over ALICE detector material between the outer wall of the TPC and the TOF detector (< Z > = 16.1, < A > = 34.7) measured in Pb-Pb collisions at 5.02 TeV using TPC-TOF matching method. Green and yellow bands correspond to ±1 and ±2 sigma constraints of (anti-)3He inelastic cross-section for ALICE experimental data, black dashed line shows Geant4 parameterisation. 

Detail description

Keywords: 3He, antihelium-3, anti-3He, anti-He3, inelastic cross-section, Pb-Pb, TPC-TOF matching
Dataset: LHC18q_filter_pass3 ESD (Pb-Pb 5.02 TeV, 0-10%) with filtered (anti-)3He candidates
Event selection: Min. bias trigger, |VtxZ| < 10 cm
Track selection: Ncls for PID in TPC > 50, TPC Chi2 < 4, ITS Chi2 < 36, Ncls in ITS-SPD >= 1, SetRequireITSRefit(kTRUE), SetRequireTPCRefit(kTRUE)