Scope: PWG
PWG-HF (Heavy Flavour)
Energy
5.02 TeV
System
Pb-Pb
Figure Image
Figure image (.eps)
Figure image (.pdf)
Figure Caption
v2 of electrons from heavy-flavour hadron decays
Detail description
- Data sample: LHC15o pass1 and LHC15o pass1 pidFix
- Event cuts:
- Number of tracks > 2
- Contributors of primary vertex (TRK) > 2
- Contributors of SPD primary vertex > 1
- |VTRK| z < 10 cm
- dz = |VSPD −VTRK| zz < 0.2 cm
- dz / cov(zz)T RK + cov(zz)SPD < 10
- dz / cov(zz)T RK < 20
3.Track cuts:
- filter mask: kTrkGlobalNoDCA
- acceptance: |η| < 0.7 and 0◦ ≤ φ ≤ 360◦
- ITS and TPC refit
- Min TPC clusters: 5 for pt<3 GeV/c and 3 for pt>=3 GeV/c
- Min ITS clusters: 100
- ITS layer: kFirst
- DCAx,y: 2.4 cm
- DCAz: 3.2 cm
- TPC found clusters / findable TPC clusters > 0.6
- Rejected kink candidates
- pT interval: 1.5 ≤ pT < 8 GeV/c
4. Cluster cuts:
- acceptance: |η| < 0.7 and 80◦ < φ < 187◦
- Cell energy > 50 MeV
- Cluster energy > 100 MeV
- Min cells in cluster: 2
- Min distance to bad channel: 2
- Cluster time < 50 ns
- pT interval: 3 ≤ pT < 8 GeV/c
5. Tender used
6. PID: ITS-TOF-TPC for pt < 3 GeV/c and TPC-EMCal for pt>= 3 GeV/c