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ANALYSIS AT CERN KAZUKI OSHIMA 2 particle correlation about Pb-Pb 3.52TeV.

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Presentation on theme: "ANALYSIS AT CERN KAZUKI OSHIMA 2 particle correlation about Pb-Pb 3.52TeV."— Presentation transcript:

1 ANALYSIS AT CERN KAZUKI OSHIMA 2 particle correlation about Pb-Pb 3.52TeV

2 OUTLINE 2 particle correlation Event mixing Cut Result

3 2 PARTICLE CORRELATION Get ΔΦ Δη about all trigger and associate tpc track pairs

4 Devide event about centrality and Z vertex Pool into 10 × 10 Box Become 3 events, get 2 particle correlation 3 real part & 6 event mixing pairs Calculate correlation function EVENT MIXING

5 EVENT SELECTION Use ESD file LHC11h(2) Pb-Pb 3.57 TeV Run number 168988,170269,169837,168108,169238,170207 Event Cut |Zvertex|<10cm ESD Track cut TPC acceptance |Δη|<0.9 ITS matching

6 RESULT

7 CENTRALITY DEPENDENCE trigger 2-3GeV, associate 1-2GeV

8 ETA PROJECTION 1.0<|Δη| <1.8 Fit by Fourier series

9 VN PLOT v1v2v3 v4 v5 v6 (x,y):(centrality,vn)

10 TRIGGER DEPENDENCE Projection about Centrality 0-10%

11 V2 TRIGGER DEPENDENCE 2-3GeV 3-4GeV 5-6GeV 4-5GeV centrality

12 OUTLOOK Look again fitting error move associate pt fixed 1-2GeV this time Calculate severally vn Consider more event cut and quality track cut to remove something like v2 of eta direction


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