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Published byTyrone Pearson Modified over 9 years ago
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ANALYSIS AT CERN KAZUKI OSHIMA 2 particle correlation about Pb-Pb 3.52TeV
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OUTLINE 2 particle correlation Event mixing Cut Result
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2 PARTICLE CORRELATION Get ΔΦ Δη about all trigger and associate tpc track pairs
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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
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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
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RESULT
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CENTRALITY DEPENDENCE trigger 2-3GeV, associate 1-2GeV
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ETA PROJECTION 1.0<|Δη| <1.8 Fit by Fourier series
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VN PLOT v1v2v3 v4 v5 v6 (x,y):(centrality,vn)
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TRIGGER DEPENDENCE Projection about Centrality 0-10%
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V2 TRIGGER DEPENDENCE 2-3GeV 3-4GeV 5-6GeV 4-5GeV centrality
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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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