// $Id$ // // File: DReaction_factory_p2pi_rho.cc // Created: Fri Jul 22 13:29:59 EDT 2016 // Creator: rhoteven (on Linux ifarm1401 2.6.32-431.el6.x86_64 x86_64) // #include "DReaction_factory_p2pi_rho.h" //------------------ // brun //------------------ jerror_t DReaction_factory_p2pi_rho::brun(JEventLoop* locEventLoop, int32_t locRunNumber) { vector locBeamPeriodVector; locEventLoop->GetCalib("PHOTON_BEAM/RF/beam_period", locBeamPeriodVector); dBeamBunchPeriod = locBeamPeriodVector[0]; return NOERROR; } //------------------ // evnt //------------------ jerror_t DReaction_factory_p2pi_rho::evnt(JEventLoop* locEventLoop, uint64_t locEventNumber) { // Make as many DReaction objects as desired DReactionStep* locReactionStep = NULL; DReaction* locReaction = NULL; //create with a unique name for each DReaction object. CANNOT (!) be "Thrown" // DOCUMENTATION: // ANALYSIS library: https://halldweb1.jlab.org/wiki/index.php/GlueX_Analysis_Software // DReaction factory: https://halldweb1.jlab.org/wiki/index.php/Analysis_DReaction /************************************************** p2pi_rho Reaction Definition *************************************************/ locReaction = new DReaction("p2pi_rho"); //Required: DReactionSteps to specify the channel and decay chain you want to study //Particles are of type Particle_t, an enum defined in sim-recon/src/libraries/include/particleType.h //Example: g, p -> pi+, pi-, p locReactionStep = new DReactionStep(); locReactionStep->Set_InitialParticleID(Gamma); locReactionStep->Set_TargetParticleID(Proton); locReactionStep->Add_FinalParticleID(PiPlus); locReactionStep->Add_FinalParticleID(PiMinus); locReactionStep->Add_FinalParticleID(Proton); locReaction->Add_ReactionStep(locReactionStep); dReactionStepPool.push_back(locReactionStep); //register so will be deleted later: prevent memory leak /**************************************************** p2pi_rho Control Settings ****************************************************/ // Highly Recommended: Set EventStore skim query (use with "eventstore" source) // This will skip creating particle combos for events that aren't in the skims you list // Query should be comma-separated list of skims to boolean-AND together locReaction->Set_EventStoreSkims("2q+,q-"); //boolean-AND of skims // Recommended: Type of kinematic fit to perform (default is d_NoFit) //fit types are of type DKinFitType, an enum defined in sim-recon/src/libraries/ANALYSIS/DReaction.h //Options: d_NoFit (default), d_P4Fit, d_VertexFit, d_P4AndVertexFit //P4 fits automatically constrain decaying particle masses, unless they are manually disabled //locReaction->Set_KinFitType(d_P4AndVertexFit); // Highly Recommended: When generating particle combinations, reject all beam photons that match to a different RF bunch (delta_t > 1.002 ns) locReaction->Set_MaxPhotonRFDeltaT(1.5*dBeamBunchPeriod); //should be minimum cut value // Highly Recommended: Cut on number of extra "good" tracks. "Good" tracks are ones that survive the "PreSelect" (or user custom) factory. // Important: Keep cut large: Can have many ghost and accidental tracks that look "good" locReaction->Set_MaxExtraGoodTracks(4); // Highly Recommended: Enable ROOT TTree output for this DReaction locReaction->Enable_TTreeOutput("tree_p2pi_rho.root"); //string is file name (must end in ".root"!!): doen't need to be unique, feel free to change /************************************************** p2pi_rho Pre-Combo Custom Cuts *************************************************/ // Highly Recommended: Very loose DAnalysisAction cuts, applied just after creating the combination (before saving it) // Example: Missing mass of proton locReaction->Add_ComboPreSelectionAction(new DCutAction_MissingMassSquared(locReaction, false, -0.05, 0.05)); /**************************************************** p2pi_rho Analysis Actions ****************************************************/ // Recommended: Analysis actions automatically performed by the DAnalysisResults factories to histogram useful quantities. //These actions are executed sequentially, and are executed on each surviving (non-cut) particle combination //Pre-defined actions can be found in ANALYSIS/DHistogramActions_*.h and ANALYSIS/DCutActions.h //If a histogram action is repeated, it should be created with a unique name (string) to distinguish them // HISTOGRAM PID locReaction->Add_AnalysisAction(new DHistogramAction_PID(locReaction)); // CUT PID locReaction->Add_AnalysisAction(new DCutAction_PIDDeltaT(locReaction, false, 1.0, PiPlus, SYS_TOF)); locReaction->Add_AnalysisAction(new DCutAction_PIDDeltaT(locReaction, false, 2.5, PiPlus, SYS_BCAL)); locReaction->Add_AnalysisAction(new DCutAction_PIDDeltaT(locReaction, false, 2.5, PiPlus, SYS_FCAL)); locReaction->Add_AnalysisAction(new DCutAction_PIDDeltaT(locReaction, false, 1.0, PiMinus, SYS_TOF)); locReaction->Add_AnalysisAction(new DCutAction_PIDDeltaT(locReaction, false, 2.5, PiMinus, SYS_BCAL)); locReaction->Add_AnalysisAction(new DCutAction_PIDDeltaT(locReaction, false, 2.5, PiMinus, SYS_FCAL)); locReaction->Add_AnalysisAction(new DCutAction_PIDDeltaT(locReaction, false, 2.5, Proton, SYS_TOF)); locReaction->Add_AnalysisAction(new DCutAction_PIDDeltaT(locReaction, false, 2.5, Proton, SYS_BCAL)); locReaction->Add_AnalysisAction(new DCutAction_PIDDeltaT(locReaction, false, 2.5, Proton, SYS_FCAL)); locReaction->Add_AnalysisAction(new DCustomAction_dEdxCut(locReaction, false)); locReaction->Add_AnalysisAction(new DHistogramAction_MissingMassSquared(locReaction, false, 1000, -0.05, 0.05, "PreKinFit")); // a few test //locReaction->Add_AnalysisAction(new DCutAction_MinTrackHits(locReaction, 12, "TrackHits")); //locReaction->Add_AnalysisAction(new DCutAction_TrackHitPattern(locReaction, 0, 5, "CutFDC")); deque locRhoPIDs; locRhoPIDs.push_back(PiMinus); locRhoPIDs.push_back(PiPlus); locReaction->Add_AnalysisAction(new DHistogramAction_InvariantMass(locReaction, 0, locRhoPIDs, false, 500, 0.0, 2.0, "Rho_PreKinFit")); //locReaction->Add_AnalysisAction(new DCutAction_InvariantMass(locReaction, 0, locRhoPIDs, false, 0.0, 2.2)); // KINEMATIC FIT //locReaction->Add_AnalysisAction(new DHistogramAction_KinFitResults(locReaction, 0.05)); //5% confidence level cut on pull histograms only //locReaction->Add_AnalysisAction(new DCutAction_KinFitFOM(locReaction, -1.0)); //0% confidence level cut //require kinematic fit converges // Kinematics locReaction->Add_AnalysisAction(new DHistogramAction_ParticleComboKinematics(locReaction, false)); //false: measured data locReaction->Add_AnalysisAction(new DHistogramAction_TrackVertexComparison(locReaction)); _data.push_back(locReaction); //Register the DReaction with the factory return NOERROR; } //------------------ // fini //------------------ jerror_t DReaction_factory_p2pi_rho::fini(void) { for(size_t loc_i = 0; loc_i < dReactionStepPool.size(); ++loc_i) delete dReactionStepPool[loc_i]; //cleanup memory return NOERROR; }