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## Rivet analyses reference

### ALICE_2015_PBPBCentrality

ALICE centrality calibration for Pb-Pb at 5.02TeV
Experiment: ALICE (LHC)
Status: NEW
Authors:
• Christian Holm Christensen
No references listed
Beams: p+ p+, 1000822080 1000822080
Beam energies: (1380.0, 1380.0); (287040.0, 287040.0); (522392.0, 522392.0) GeV
Run details:
• Pb-Pb at sqrt(sNN)=5.02TeV

Dummy analysis to bring in the centrality calibration for Pb-Pb at 5.02TeV

Source code: ALICE_2015_PBPBCentrality.cc
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 #include #include #include namespace Rivet { /// Dummy analysis for centrality calibration in Pb-Pb at 5.02TeV /// /// @author Christian Holm Christensen class ALICE_2015_PBPBCentrality : public Analysis { public: /// Constructor ALICE_2015_PBPBCentrality() : Analysis("ALICE_2015_PBPBCentrality") { } /// Initialize this analysis. void init() { ALICE::V0AndTrigger v0and; declare(v0and,"V0-AND"); ALICE::V0MMultiplicity v0m; declare(v0m,"V0M"); // Access the HepMC heavy ion info declare(HepMCHeavyIon(), "HepMC"); book(_v0m, "V0M"); book(_imp, "V0M_IMP",100,0,20); } /// Analyse a single event. void analyze(const Event& event) { // Get and fill in the impact parameter value if the information is valid. _imp->fill(apply(event, "HepMC").impact_parameter()); // Check if we have any hit in either V0-A or -C. If not, the // event is not selected and we get out. if (!apply(event,"V0-AND")()) return; // Fill in the V0 multiplicity for this event _v0m->fill(apply(event,"V0M")()); } /// Finalize this analysis void finalize() { _v0m->normalize(); _imp->normalize(); } /// The distribution of V0M multiplicity Histo1DPtr _v0m; /// The distribution of impact parameters Histo1DPtr _imp; }; // The hook for the plugin system DECLARE_RIVET_PLUGIN(ALICE_2015_PBPBCentrality); }