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DSelector_etapi.C
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DSelector_etapi.C
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#include "DSelector_etapi.h"
string topologyString="4#gammap[#pi^{0},#eta]";
//string topologyString="5#gammap[2#pi^{0}]";
//string topologyString="4#gammap[2#pi^{0}]";
//string topologyString="6#gammap[2#pi^{0},#eta]";
//string topologyString="6#gammap[3#pi^{0}]";
float radToDeg=180/3.14159;
void DSelector_etapi::Init(TTree *locTree)
{
// USERS: IN THIS FUNCTION, ONLY MODIFY SECTIONS WITH A "USER" OR "EXAMPLE" LABEL. LEAVE THE REST ALONE.
// The Init() function is called when the selector needs to initialize a new tree or chain.
// Typically here the branch addresses and branch pointers of the tree will be set.
// Init() will be called many times when running on PROOF (once per file to be processed).
//USERS: SET OUTPUT FILE NAME //can be overriden by user in PROOF
dOutputFileName = ""; //"" for none
dOutputTreeFileName = ""; //"" for none
dFlatTreeFileName = "output_flat.root"; //output flat tree (one combo per tree entry), "" for none
dFlatTreeName = "kin"; //if blank, default name will be chosen
dSaveDefaultFlatBranches = false; // False: don't save default branches, reduce disk footprint.
//dSaveTLorentzVectorsAsFundamentaFlatTree = false; // Default (or false): save particles as TLorentzVector objects. True: save as four doubles instead.
//Because this function gets called for each TTree in the TChain, we must be careful:
//We need to re-initialize the tree interface & branch wrappers, but don't want to recreate histograms
bool locInitializedPriorFlag = dInitializedFlag; //save whether have been initialized previously
DSelector::Init(locTree); //This must be called to initialize wrappers for each new TTree
//gDirectory now points to the output file with name dOutputFileName (if any)
if(locInitializedPriorFlag)
return; //have already created histograms, etc. below: exit
Get_ComboWrappers();
dPreviousRunNumber = 0;
if (dFlatTreeFileName!=""){
// Fundamental = char, int, float, double, etc.
// AmpTools tree output - step 2
// Creating new branches in the flat tree
SetupAmpTools_FlatTree(); // sets most of the branches necesary for AmpTools PWA
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Target_Mass");
dFlatTreeInterface->Create_Branch_FundamentalArray<Int_t>("PID_FinalState","NumFinalState");
dFlatTreeInterface->Create_Branch_Fundamental<Int_t>("BeamAngle");
// Photon Related
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonTheta1");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonTheta2");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonTheta3");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonTheta4");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonE1");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonE2");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonE3");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonE4");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("pPhotonE");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("pPhotonTheta");
// System = BCAL/FCAL/NULL. Actual type is DetectorSystem_t which is enum object
// FCAL = 0x0020 = 32 in hexadecimal, BCAL = 0x0004 = 4
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonSystem1");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonSystem2");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonSystem3");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("photonSystem4");
// Proton Related
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("proton_momentum");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("proton_z");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("proton_R");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("proton_dEdxCDC");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("pMagP3Proton");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("pzCutmin");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("pRProton");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("pdEdxCDCProton");
// Exclusivity Related
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("DOFKinFit");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("chiSq");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("unusedEnergy");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("unusedShowers");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mmsq");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("pMissingMassSquared");
// Kinematics Related
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mismatchPairMass_13");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mismatchPairMass_24");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mismatchPairMass_23");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mismatchPairMass_14");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("omegaCut");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Mpi0p");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Metap");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Mpi0g3");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Mpi0g4");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Mpi0");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Meta");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Mpi0eta");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Ebeam");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mandelstam_tp");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mandelstam_t");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mandelstam_teta");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mandelstam_tpi0");
////// Angles related
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Phi");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("cosTheta_X_cm");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("phi_X_cm");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("cosTheta_eta_cm");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("cosTheta_pi0_cm");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("phi_X_lab");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("phi_eta_lab");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("phi_pi0_lab");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("cosTheta_eta_gj");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("phi_eta_gj");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("cosTheta_eta_hel");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("phi_eta_hel");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("vanHove_omega");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("vanHove_x");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("vanHove_y");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("pVH");
// Weighting Related
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("AccWeight");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("weightASBS");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("weightBS");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("weightBSpi0");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("weightBSeta");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("rfTime");
// Thrown quantities
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Mpi0eta_thrown");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("mandelstam_t_thrown");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Ebeam_thrown");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Mpi0p_thrown");
dFlatTreeInterface->Create_Branch_Fundamental<Float_t>("Metap_thrown");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("isCorrectCombo");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("isCorrectBeam");
dFlatTreeInterface->Create_Branch_Fundamental<Bool_t>("isCorrectSpect");
// Event Related
dFlatTreeInterface->Create_Branch_Fundamental<Int_t>("run");
dFlatTreeInterface->Create_Branch_Fundamental<Int_t>("event");
dFlatTreeInterface->Create_Branch_Fundamental<Int_t>("topologyId");
}
/*********************************** EXAMPLE USER INITIALIZATION: ANALYSIS ACTIONS **********************************/
// // EXAMPLE: Create deque for histogramming particle masses:
// // // For histogramming the phi mass in phi -> K+ K-
// // // Be sure to change this and dAnalyzeCutActions to match reaction
// std::deque<Particle_t> MyPhi;
// MyPhi.push_back(KPlus); MyPhi.push_back(KMinus);
//
// //ANALYSIS ACTIONS: //Executed in order if added to dAnalysisActions
// //false/true below: use measured/kinfit data
//
// //PID
// dAnalysisActions.push_back(new DHistogramAction_ParticleID(dComboWrapper, false));
// //below: value: +/- N ns, Unknown: All PIDs, SYS_NULL: all timing systems
// //dAnalysisActions.push_back(new DCutAction_PIDDeltaT(dComboWrapper, false, 0.5, KPlus, SYS_BCAL));
//
// //PIDFOM (for charged tracks)
// dAnalysisActions.push_back(new DHistogramAction_PIDFOM(dComboWrapper));
// //dAnalysisActions.push_back(new DCutAction_PIDFOM(dComboWrapper, KPlus, 0.1));
// //dAnalysisActions.push_back(new DCutAction_EachPIDFOM(dComboWrapper, 0.1));
//
// //MASSES
// //dAnalysisActions.push_back(new DHistogramAction_InvariantMass(dComboWrapper, false, Lambda, 1000, 1.0, 1.2, "Lambda"));
// //dAnalysisActions.push_back(new DHistogramAction_MissingMassSquared(dComboWrapper, false, 1000, -0.1, 0.1));
//
// //KINFIT RESULTS
// dAnalysisActions.push_back(new DHistogramAction_KinFitResults(dComboWrapper));
//
// //CUT MISSING MASS
// //dAnalysisActions.push_back(new DCutAction_MissingMassSquared(dComboWrapper, false, -0.03, 0.02));
//
// //CUT ON SHOWER QUALITY
// //dAnalysisActions.push_back(new DCutAction_ShowerQuality(dComboWrapper, SYS_FCAL, 0.5));
//
// //BEAM ENERGY
// dAnalysisActions.push_back(new DHistogramAction_BeamEnergy(dComboWrapper, false));
// //dAnalysisActions.push_back(new DCutAction_BeamEnergy(dComboWrapper, false, 8.2, 8.8)); // Coherent peak for runs in the range 30000-59999
//
// //KINEMATICS
// dAnalysisActions.push_back(new DHistogramAction_ParticleComboKinematics(dComboWrapper, false));
//
// // ANALYZE CUT ACTIONS
// // // Change MyPhi to match reaction
// dAnalyzeCutActions = new DHistogramAction_AnalyzeCutActions( dAnalysisActions, dComboWrapper, false, 0, MyPhi, 1000, 0.9, 2.4, "CutActionEffect" );
//
// //INITIALIZE ACTIONS
// //If you create any actions that you want to run manually (i.e. don't add to dAnalysisActions), be sure to initialize them here as well
// Initialize_Actions();
// dAnalyzeCutActions->Initialize(); // manual action, must call Initialize()
/******************************** EXAMPLE USER INITIALIZATION: STAND-ALONE HISTOGRAMS *******************************/
/// Topology histogram. Useful for BGGEN studies where a variety of photoproduction reactions
// are simulated. For each event we know the generated reaction so we can begin understanding
// which processes leak into our final state. We have to turn off bTopology! Otherwise we will
// just have etapi0 events!
//dHistThrownTopologies = new TH1F("hThrownTopologies","hThrownTopologies", 10, -0.5, 9.5);
//vector<TString> locThrownTopologies;
//locThrownTopologies.push_back("4#gammap[#pi^{0},#eta]");
//locThrownTopologies.push_back("6#gammap[3#pi^{0}]");
//locThrownTopologies.push_back("5#gammap[2#pi^{0},#omega]");
//locThrownTopologies.push_back("6#gammap[2#pi^{0},#eta]");
//locThrownTopologies.push_back("4#gammap[2#pi^{0}]");
//locThrownTopologies.push_back("8#gammap[4#pi^{0},#eta]");
//locThrownTopologies.push_back("6#gamma#pi^{#plus}#pi^{#minus}p[3#pi^{0}]");
//locThrownTopologies.push_back("4#gamma#pi^{#plus}#pi^{#minus}p[2#pi^{0}]");
//locThrownTopologies.push_back("4#gamma#pi^{#plus}#pi^{#minus}p[#pi^{0},#eta]");
//locThrownTopologies.push_back("8#gammap[3#pi^{0},#eta]");
//locThrownTopologies.push_back("3#gammap[#pi^{0},#omega]");
//for(uint i=0; i<locThrownTopologies.size(); i++) {
// dHistInvariantMass_ThrownTopology[locThrownTopologies[i]] = new TH1I(Form("hInvariantMass_ThrownTopology_%d", i),
// Form("Invariant Mass Topology: %s", locThrownTopologies[i].Data()), 1000, 0.5, 2.0);
//}
//EXAMPLE MANUAL HISTOGRAMS:
// Best practices is to include the bin width in the axis labels
dHist_BeamEnergy = new TH1F("BeamEnergy", ";Beam Energy (GeV);Entries / 0.1 GeV", 90, 3.0, 12.0);
dHist_Metapi_tot = new TH1F("Metapi_tot",";M(4#gamma) (GeV);Entries / 0.02 GeV",100,0.5,2.5);
dHist_Metapi_sig = new TH1F("Metapi_sig",";M(4#gamma) (GeV);Entries / 0.02 GeV",100,0.5,2.5);
dHist_Metapi_bkg = new TH1F("Metapi_bkg",";M(4#gamma) (GeV);Entries / 0.02 GeV",100,0.5,2.5);
dHist_Mpi0p = new TH1F("Mpi0p",";M(#gamma_{1}#gamma_{2}p) (GeV);Entries / 0.04 GeV",100,0,4);
dHist_Metap = new TH1F("Metap",";M(#gamma_{3}#gamma_{4}p) (GeV);Entries / 0.04 GeV",100,0,4);
dHist_Meta = new TH1F("Meta",";M(#gamma_{3}#gamma_{4}) (GeV);Entries / 0.05 GeV",100,0.3,0.8);
dHist_Mpi0 = new TH1F("Mpi0",";M(#gamma_{1}#gamma_{2}) (GeV);Entries / 0.0012 GeV",100,0.08,0.2);
dHist_t = new TH1F("mandelstam_t",";-t GeV^{2};Entries / 0.05 GeV^{2}",60,0,3);
dHist_rf = new TH1F("rftime",";RF (ns);Entries / 0.4 ns",120,-24,24);
dHist_mmsq = new TH1F("mmsq",";MMsq;Entries / 0.002 GeV",100,-0.1,0.1);
dHist_chiSq = new TH1F("chiSq",";#chi^{2};Entries / 2",50,0,100);
dHist_photonThetaPi0 = new TH1F("photonThetaPi0",";#theta of #gamma_{1}(#gamma_{2}) GeV;Entries / 0.05 GeV^{2} ",80,0,40);
dHist_photonThetaEta = new TH1F("photonThetaEta",";#theta of #gamma_{3}(#gamma_{4}) GeV;Entries / 0.05 GeV^{2} ",80,0,40);
dHist_dEdx_momentum = new TH2F("dEdx_momentum",";Proton Momentum Entries / 0.04 GeV/c;dEdx_{CDC} Entries / 3E-7 GeV/cm",100,0,4,100,0,0.00003);
dHist_protonZ = new TH1F("proton_z",";Proton z (cm);Entries / 1 cm", 50, 40,90);
dHist_cosThetaHelVsMetapi0 = new TH2F("cosThetaHelVsMetapi0",";M(#eta#pi^{0}) Entries / 0.02 GeV;cos_{hel}(#theta) #eta Entries / 0.04",100,0.5,2.5,50,-1,1);
dHist_cosThetaGJVsMetapi0 = new TH2F("cosThetaGJVsMetapi0",";M(#eta#pi^{0}) Entries / 0.02 GeV;cos_{GJ}(#theta) #eta Entries / 0.04",100,0.5,2.5,50,-1,1);
dHist_combosRemaining = new TH1F("combosRemaining",";# Combos / Event Passed Selections",7,0,7);
/************************** EXAMPLE USER INITIALIZATION: CUSTOM OUTPUT BRANCHES - MAIN TREE *************************/
//EXAMPLE MAIN TREE CUSTOM BRANCHES (OUTPUT ROOT FILE NAME MUST FIRST BE GIVEN!!!! (ABOVE: TOP)):
//The type for the branch must be included in the brackets
//1st function argument is the name of the branch
//2nd function argument is the name of the branch that contains the size of the array (for fundamentals only)
/*
dTreeInterface->Create_Branch_Fundamental<Int_t>("my_int"); //fundamental = char, int, float, double, etc.
dTreeInterface->Create_Branch_FundamentalArray<Int_t>("my_int_array", "my_int");
dTreeInterface->Create_Branch_FundamentalArray<Float_t>("my_combo_array", "NumCombos");
dTreeInterface->Create_Branch_NoSplitTObject<TLorentzVector>("my_p4");
dTreeInterface->Create_Branch_ClonesArray<TLorentzVector>("my_p4_array");
*/
/************************** EXAMPLE USER INITIALIZATION: CUSTOM OUTPUT BRANCHES - FLAT TREE *************************/
// RECOMMENDED: CREATE ACCIDENTAL WEIGHT BRANCH
// dFlatTreeInterface->Create_Branch_Fundamental<Double_t>("accidweight");
//EXAMPLE FLAT TREE CUSTOM BRANCHES (OUTPUT ROOT FILE NAME MUST FIRST BE GIVEN!!!! (ABOVE: TOP)):
//The type for the branch must be included in the brackets
//1st function argument is the name of the branch
//2nd function argument is the name of the branch that contains the size of the array (for fundamentals only)
/*
dFlatTreeInterface->Create_Branch_Fundamental<Int_t>("flat_my_int"); //fundamental = char, int, float, double, etc.
dFlatTreeInterface->Create_Branch_FundamentalArray<Int_t>("flat_my_int_array", "flat_my_int");
dFlatTreeInterface->Create_Branch_NoSplitTObject<TLorentzVector>("flat_my_p4");
dFlatTreeInterface->Create_Branch_ClonesArray<TLorentzVector>("flat_my_p4_array");
*/
/************************************* ADVANCED EXAMPLE: CHOOSE BRANCHES TO READ ************************************/
//TO SAVE PROCESSING TIME
//If you know you don't need all of the branches/data, but just a subset of it, you can speed things up
//By default, for each event, the data is retrieved for all branches
//If you know you only need data for some branches, you can skip grabbing data from the branches you don't need
//Do this by doing something similar to the commented code below
//dTreeInterface->Clear_GetEntryBranches(); //now get none
//dTreeInterface->Register_GetEntryBranch("Proton__P4"); //manually set the branches you want
/************************************** DETERMINE IF ANALYZING SIMULATED DATA *************************************/
dIsMC = (dTreeInterface->Get_Branch("MCWeight") != NULL);
}
Bool_t DSelector_etapi::Process(Long64_t locEntry)
{
// The Process() function is called for each entry in the tree. The entry argument
// specifies which entry in the currently loaded tree is to be processed.
//
// This function should contain the "body" of the analysis. It can contain
// simple or elaborate selection criteria, run algorithms on the data
// of the event and typically fill histograms.
//
// The processing can be stopped by calling Abort().
// Use fStatus to set the return value of TTree::Process().
// The return value is currently not used.
//CALL THIS FIRST
DSelector::Process(locEntry); //Gets the data from the tree for the entry
//cout << "RUN " << Get_RunNumber() << ", EVENT " << Get_EventNumber() << endl;
//TLorentzVector locProductionX4 = Get_X4_Production();
/******************************************** GET POLARIZATION ORIENTATION ******************************************/
//Only if the run number changes
//RCDB environment must be setup in order for this to work! (Will return false otherwise)
UInt_t locRunNumber = Get_RunNumber();
if(locRunNumber != dPreviousRunNumber)
{
dIsPolarizedFlag = dAnalysisUtilities.Get_IsPolarizedBeam(locRunNumber, dIsPARAFlag);
dPreviousRunNumber = locRunNumber;
hasPolarizationAngle = dAnalysisUtilities.Get_PolarizationAngle(locRunNumber, locPolarizationAngle);
}
/********************************************* SETUP UNIQUENESS TRACKING ********************************************/
//ANALYSIS ACTIONS: Reset uniqueness tracking for each action
//For any actions that you are executing manually, be sure to call Reset_NewEvent() on them here
// Reset_Actions_NewEvent();
// dAnalyzeCutActions->Reset_NewEvent(); // manual action, must call Reset_NewEvent()
//PREVENT-DOUBLE COUNTING WHEN HISTOGRAMMING
//Sometimes, some content is the exact same between one combo and the next
//e.g. maybe two combos have different beam particles, but the same data for the final-state
//When histogramming, you don't want to double-count when this happens: artificially inflates your signal (or background)
//So, for each quantity you histogram, keep track of what particles you used (for a given combo)
//Then for each combo, just compare to what you used before, and make sure it's unique
//EXAMPLE 1: Particle-specific info:
set<Int_t> locUsedSoFar_BeamEnergy; //Int_t: Unique ID for beam particles. set: easy to use, fast to search
//EXAMPLE 2: Combo-specific info:
//In general: Could have multiple particles with the same PID: Use a set of Int_t's
//In general: Multiple PIDs, so multiple sets: Contain within a map
//Multiple combos: Contain maps within a set (easier, faster to search)
set<map<Particle_t, set<Int_t> > > locUsedSoFar_MissingMass;
//INSERT USER ANALYSIS UNIQUENESS TRACKING HERE
/**************************************** EXAMPLE: FILL CUSTOM OUTPUT BRANCHES **************************************/
/*
Int_t locMyInt = 7;
dTreeInterface->Fill_Fundamental<Int_t>("my_int", locMyInt);
TLorentzVector locMyP4(4.0, 3.0, 2.0, 1.0);
dTreeInterface->Fill_TObject<TLorentzVector>("my_p4", locMyP4);
for(int loc_i = 0; loc_i < locMyInt; ++loc_i)
dTreeInterface->Fill_Fundamental<Int_t>("my_int_array", 3*loc_i, loc_i); //2nd argument = value, 3rd = array index
*/
/******************************************* LOOP OVER THROWN DATA (OPTIONAL) ***************************************/
TString locThrownTopology = Get_ThrownTopologyString();
//Thrown beam: just use directly
float locBeamE_thrown=0;
float locMetapi0_thrown=0;
float locT_thrown=0;
float locMpi0p_thrown=0;
float locMetap_thrown=0;
TLorentzVector locProtonP4_thrown;
TLorentzVector locEtaP4_thrown;
TLorentzVector locPi0P4_thrown;
if(dThrownBeam != NULL)
locBeamE_thrown = dThrownBeam->Get_P4().E();
//Loop over throwns
for(UInt_t loc_i = 0; loc_i < Get_NumThrown(); ++loc_i)
{
//Set branch array indices corresponding to this particle
dThrownWrapper->Set_ArrayIndex(loc_i);
Particle_t locPID = dThrownWrapper->Get_PID();
TLorentzVector locThrownP4_thrown = dThrownWrapper->Get_P4();
if (locPID==14)
locProtonP4_thrown=locThrownP4_thrown;
else if (locPID==7)
locPi0P4_thrown=locThrownP4_thrown;
else if (locPID==17)
locEtaP4_thrown=locThrownP4_thrown;
}
locMetapi0_thrown=(locPi0P4_thrown+locEtaP4_thrown).M();
locT_thrown=-(dTargetP4-locProtonP4_thrown).M2();
locMpi0p_thrown=(locPi0P4_thrown+locProtonP4_thrown).M();
locMetap_thrown=(locEtaP4_thrown+locProtonP4_thrown).M();
//bool bMetapi0_thrown = (locMetapi0_thrown>1.04)*(locMetapi0_thrown<1.56);
bool bmandelstamt_thrown=(locT_thrown<1.0)*(locT_thrown>0.1);
bool bBeamE_thrown = (locBeamE_thrown<8.8)*(locBeamE_thrown>8.2);
bool bMpi0eta_thrown = (locMetapi0_thrown<1.80)*(locMetapi0_thrown>0.8);
bool bTopology = locThrownTopology==topologyString;
//bTopology=true; // For the BGGEN study
bool selection_thrown=bTopology;//*bBeamE_thrown;//*bmandelstamt_thrown*bMpi0eta_thrown;
// selection_thrown=true;
if (dIsMC*!selection_thrown)
return kTRUE;
/************************************************* LOOP OVER COMBOS *************************************************/
//Loop over combos
int combos_remaining=0;
float combo_weight=0;
for(UInt_t loc_i = 0; loc_i < Get_NumCombos(); ++loc_i)
{
//Set branch array indices for combo and all combo particles
dComboWrapper->Set_ComboIndex(loc_i);
// Is used to indicate when combos have been cut
if(dComboWrapper->Get_IsComboCut()){ // Is false when tree originally created
continue;} // Combo has been cut previously
/********************************************** GET PARTICLE INDICES *********************************************/
//Used for tracking uniqueness when filling histograms, and for determining unused particles
//Step 0
Int_t locBeamID = dComboBeamWrapper->Get_BeamID();
Int_t locProtonTrackID = dProtonWrapper->Get_TrackID();
//Step 1
Int_t locPhoton1NeutralID = dPhoton1Wrapper->Get_NeutralID();
Int_t locPhoton2NeutralID = dPhoton2Wrapper->Get_NeutralID();
//Step 2
Int_t locPhoton3NeutralID = dPhoton3Wrapper->Get_NeutralID();
Int_t locPhoton4NeutralID = dPhoton4Wrapper->Get_NeutralID();
// We have access to the truth information so we can construct a scheme to select the true combination
// in the simulated recon tree there is a branch "isTrueCombo" that exists but for some reason
// it is all set to zero for our trees. We can do this manually though by checking PIDs
// Set the default values to true so that if we do not have thrown information we do not need to do any matching
// USAGE: Filling the output tree with the information allows us to select on the truth
// 1. Accidental subtraction statistically selects the true beam photon = isCorrectBeam
// 2. Mass sideband subtraction statistically selects the true pi0/eta combination = isCorrectSpect
// The idea is to apply all selections then make a plot. Compare subtraction scheme to correct particles
bool isCorrectCombo=true;
bool isCorrectBeam=true;
bool isCorrectSpect=true;
vector<Int_t> thrownPIDs;
vector<Int_t> parentIDs;
vector<Int_t> matchedParentPIDs;
if (Get_NumThrown()!=0){
for(UInt_t loc_i = 0; loc_i < Get_NumThrown(); ++loc_i)
{
dThrownWrapper->Set_ArrayIndex( loc_i );
//cout << "thrown PID: " << dThrownWrapper->Get_PID() << " with parent thrown index: " << dThrownWrapper->Get_ParentIndex() << endl;
thrownPIDs.push_back(dThrownWrapper->Get_PID());
parentIDs.push_back(dThrownWrapper->Get_ParentIndex());
}
// Obtain all the thrown IDs for the photons
vector<Int_t> thrownID_phs = {
dPhoton1Wrapper->Get_ThrownIndex(),
dPhoton2Wrapper->Get_ThrownIndex(),
dPhoton3Wrapper->Get_ThrownIndex(),
dPhoton4Wrapper->Get_ThrownIndex(),
};
for (auto thrownID: thrownID_phs){
if (thrownID != -1){ // if -1 then not matched to a thrown particle
//cout << "ph parent " << parentIDs[thrownID] << " has PID " << thrownPIDs[parentIDs[thrownID]] << endl;
matchedParentPIDs.push_back(thrownPIDs[parentIDs[thrownID]]);
}
else{ // if any of the photons did not match to a thrown particle we do not have the correct combo clearly
isCorrectSpect=false;
//cout << "ph has no parent" << endl;
matchedParentPIDs.push_back(-1);
}
}
// photons 1,2 should pair to a pi0 (Geant PID=7) and photons 3,4 should pair to an eta (17)
// proton should have a proton PID=14
if ((matchedParentPIDs[0]==7)*
(matchedParentPIDs[1]==7)*
(matchedParentPIDs[2]==17)*
(matchedParentPIDs[3]==17)*
(thrownPIDs[dProtonWrapper->Get_ThrownIndex()]==14)){
isCorrectSpect=true;}
else{ isCorrectSpect=false; }
// Checking to see if the beam photon matches the thrown by comparing the energies
//cout << "Thrown:Combo Beam E " << locBeamE_thrown << ":" << (dComboBeamWrapper->Get_P4()).E() << endl;
if ( abs(locBeamE_thrown-(dComboBeamWrapper->Get_P4()).E())<0.0001 )
isCorrectBeam=true;
else
isCorrectBeam=false;
// Finally, the true combo is when we have the true spectroscopic combination and the true beam photon
isCorrectCombo=isCorrectSpect*isCorrectBeam;
//cout << "correct beam/spect/combo: " << isCorrectBeam << "/" << isCorrectSpect << "/" << isCorrectCombo <<endl;
}
/*********************************************** GET FOUR-MOMENTUM **********************************************/
// Get P4's: //is kinfit if kinfit performed, else is measured
//dTargetP4 is target p4
//Step 0
TLorentzVector locBeamP4 = dComboBeamWrapper->Get_P4();
TLorentzVector locProtonP4 = dProtonWrapper->Get_P4();
TLorentzVector locProtonX4 = dProtonWrapper->Get_X4();
//Step 1
TLorentzVector locPhoton1P4 = dPhoton1Wrapper->Get_P4();
TLorentzVector locPhoton2P4 = dPhoton2Wrapper->Get_P4();
//Step 2
TLorentzVector locPhoton3P4 = dPhoton3Wrapper->Get_P4();
TLorentzVector locPhoton4P4 = dPhoton4Wrapper->Get_P4();
//Construct Intermediate Resonances
TLorentzVector locEtaP4=locPhoton3P4+locPhoton4P4;
TLorentzVector locPi0P4=locPhoton1P4+locPhoton2P4;
// Get Measured P4's:
//Step 0
TLorentzVector locBeamP4_Measured = dComboBeamWrapper->Get_P4_Measured();
TLorentzVector locProtonP4_Measured = dProtonWrapper->Get_P4_Measured();
//Step 1
TLorentzVector locPhoton1P4_Measured = dPhoton1Wrapper->Get_P4_Measured();
TLorentzVector locPhoton2P4_Measured = dPhoton2Wrapper->Get_P4_Measured();
//Step 2
TLorentzVector locPhoton3P4_Measured = dPhoton3Wrapper->Get_P4_Measured();
TLorentzVector locPhoton4P4_Measured = dPhoton4Wrapper->Get_P4_Measured();
// Get Detector System:
// Step 1/2
DetectorSystem_t locPhoton1System = dPhoton1Wrapper->Get_Detector_System_Timing();
DetectorSystem_t locPhoton2System = dPhoton2Wrapper->Get_Detector_System_Timing();
DetectorSystem_t locPhoton3System = dPhoton3Wrapper->Get_Detector_System_Timing();
DetectorSystem_t locPhoton4System = dPhoton4Wrapper->Get_Detector_System_Timing();
/********************************************* GET COMBO RF TIMING INFO *****************************************/
TLorentzVector locBeamX4_Measured = dComboBeamWrapper->Get_X4_Measured();
Double_t locBunchPeriod = dAnalysisUtilities.Get_BeamBunchPeriod(Get_RunNumber());
float locDeltaT_RF = (float)(dAnalysisUtilities.Get_DeltaT_RF(Get_RunNumber(), locBeamX4_Measured, dComboWrapper));
// 0 for in-time events, non-zero integer for out-of-time photons
Int_t locRelBeamBucket = dAnalysisUtilities.Get_RelativeBeamBucket(Get_RunNumber(), locBeamX4_Measured, dComboWrapper);
Int_t locNumOutOfTimeBunchesInTree = 4; //YOU need to specify this number
//Number of out-of-time beam bunches in tree (on a single side, so that total number out-of-time bunches accepted is 2 times
// this number for left + right bunches)
Bool_t locSkipNearestOutOfTimeBunch = true; // True: skip events from nearest out-of-time bunch on either side (recommended).
int bunchesToSkip=1;
Int_t locNumOutOfTimeBunchesToUse = locSkipNearestOutOfTimeBunch ? locNumOutOfTimeBunchesInTree-bunchesToSkip:locNumOutOfTimeBunchesInTree;
// Ideal value would be 1, but deviations require added factor, which is different for data and MC.
float locAccidentalScalingFactor = (float)(dAnalysisUtilities.Get_AccidentalScalingFactor(Get_RunNumber(), locBeamP4.E(), dIsMC));
float locAccidentalScalingFactorError = (float)(dAnalysisUtilities.Get_AccidentalScalingFactorError(Get_RunNumber(), locBeamP4.E()));
// Weight by 1 for in-time events, ScalingFactor*(1/NBunches) for out-of-time
float locHistAccidWeightFactor = (float)(locRelBeamBucket==0 ? 1 : -locAccidentalScalingFactor/(2*locNumOutOfTimeBunchesToUse)) ;
if((locSkipNearestOutOfTimeBunch && (abs(locRelBeamBucket)<=bunchesToSkip && abs(locRelBeamBucket)>0)) ||
abs(locDeltaT_RF)>4*(locNumOutOfTimeBunchesInTree+1))
{
// Skip nearest out-of-time bunch: tails of in-time distribution also leak in
// Sometimes we get RF times that are very large, like O(10^5). Lets just keep times within an extra bunch
dComboWrapper->Set_IsComboCut(true);
continue;
}
/********************************************* COMBINE FOUR-MOMENTUM ********************************************/
// DO YOUR STUFF HERE
//// CONSTRUCT SIDEBAND WEIGHTS
// A hidden step here that required fitting M(pi0) and M(eta) to extract
// the peak and widths and associated weightings. Take these number
// as given for now
float Mpi0=locPi0P4.M();
float Meta=locEtaP4.M();
float pi0Mean=0.135881;
float etaMean=0.548625;
float pi0Std=0.0076;
float etaStd=0.0191;
float pi0_sbweight; // this will be used to fill the flat trees
float eta_sbweight;
// NOMINAL
// [x,y,z] where x,y,z is # of sigmas on one side denoting the end of the
// signal region, the start of the skip region, and the end of the sb region
float nstd_pi0[3] = {3, 4, 5.5};
float nstd_eta[3] = {3, 4, 6};
// TIGHTER
//float nstd_pi0[3] = {2.75, 4.25, 5.5};
//float nstd_eta[3] = {2.75, 4.25, 6};
// LOOSER
//float nstd_pi0[3] = {3.25, 3.75, 5.5};
//float nstd_eta[3] = {3.25, 3.75, 6};
float weight_pi0=-1*nstd_pi0[0]/(nstd_pi0[2]-nstd_pi0[1]); // this is fixed valued for the weight of the pi0 sidebands
float weight_eta=-1*nstd_eta[0]/(nstd_eta[2]-nstd_eta[1]); // this is fixed valued for the weight of the eta sidebands
// The signal regions are both +/- 3 sigmas around the peak the left and right sidebands
// which are some N sigmas wide with some M sigma skip region included
// between the signal and sideband regions. The weight = the ratio the lengths
// spanned by the signal to that of the sideband times -1. OR you can do a fit to extract the weights
if (Mpi0 > pi0Mean-nstd_pi0[0]*pi0Std && Mpi0 < pi0Mean+nstd_pi0[0]*pi0Std){ pi0_sbweight=1; }
else if (Mpi0 > pi0Mean+nstd_pi0[1]*pi0Std && Mpi0 < pi0Mean+nstd_pi0[2]*pi0Std){ pi0_sbweight=weight_pi0; } // new={1.5,-2} old={1,-3.52}
else if (Mpi0 > pi0Mean-nstd_pi0[2]*pi0Std && Mpi0 < pi0Mean-nstd_pi0[1]*pi0Std){ pi0_sbweight=weight_pi0; }
else { pi0_sbweight=0; }
if (Meta > etaMean-nstd_eta[0]*etaStd && Meta < etaMean+nstd_eta[0]*etaStd){ eta_sbweight=1; }
else if (Meta > etaMean+nstd_eta[1]*etaStd && Meta < etaMean+nstd_eta[2]*etaStd){ eta_sbweight=weight_eta; } // new{2,-1.5} old={1,-2.92}
else if (Meta > etaMean-nstd_eta[2]*etaStd && Meta < etaMean-nstd_eta[1]*etaStd){ eta_sbweight=weight_eta; }
else { eta_sbweight=0; }
float sbweight=pi0_sbweight*eta_sbweight;
float weight=sbweight*locHistAccidWeightFactor;
//weight=1;
// Reject combinations with zero weights. Zero weights take up space and do nothing.
// Worse, it might cause the amptools unbinned likelihood fits to break
bool bWeight=(weight==0) ? false : true;
// AMPTOOLS REQUIRES 4 TREES (data, bkgnd, accmc, genmc)
// data = selected trees of DATA where signal region has been selected, all weights = 1
// bkgnd = selected trees of DATA where sidebands have been selected, all weights = -weight
// accmc = selected trees of ACCEPTANCE MC where signal+sidebands have been selected, all weights = weight
// genmc = thrown trees created during simulation process
bool bSignalRegion;
float branchWeight;
int choice=3;
//---------CHOICE 1 FOR "data" RUN OVER SIGNAL/DATA-------------
if (choice==1)
{
bSignalRegion=(pi0_sbweight==1)*(eta_sbweight==1)*(locHistAccidWeightFactor==1); // Keep combos ONLY in the signal region
branchWeight=1;
}
//---------CHOICE 2 FOR "bkgnd" RUN OVER SIGNAL/DATA-------------
if (choice==2)
{
bSignalRegion=!((pi0_sbweight==1)*(eta_sbweight==1)*(locHistAccidWeightFactor==1)); // Keep combo NOT in the signal region
branchWeight=-weight;
}
//---------CHOICE 3 FOR "accmc" RUN OVER FLAT MC-------------
if (choice==3)
{
bSignalRegion=true; // Keep combos that exist in the signal AND sideband region
branchWeight=weight;
}
//----------------------
// Combine 4-vectors
TLorentzVector locMissingP4_Measured = locBeamP4_Measured + dTargetP4;
locMissingP4_Measured -= locProtonP4_Measured + locPhoton1P4_Measured + locPhoton2P4_Measured + locPhoton3P4_Measured + locPhoton4P4_Measured;
/******************************************** EXECUTE ANALYSIS ACTIONS *******************************************/
// Loop through the analysis actions, executing them in order for the active particle combo
// dAnalyzeCutActions->Perform_Action(); // Must be executed before Execute_Actions()
// if(!Execute_Actions()) //if the active combo fails a cut, IsComboCutFlag automatically set
// continue;
//if you manually execute any actions, and it fails a cut, be sure to call:
//dComboWrapper->Set_IsComboCut(true);
/**************************************** EXAMPLE: FILL CUSTOM OUTPUT BRANCHES **************************************/
/*
TLorentzVector locMyComboP4(8.0, 7.0, 6.0, 5.0);
//for arrays below: 2nd argument is value, 3rd is array index
//NOTE: By filling here, AFTER the cuts above, some indices won't be updated (and will be whatever they were from the last event)
//So, when you draw the branch, be sure to cut on "IsComboCut" to avoid these.
dTreeInterface->Fill_Fundamental<Float_t>("my_combo_array", -2*loc_i, loc_i);
dTreeInterface->Fill_TObject<TLorentzVector>("my_p4_array", locMyComboP4, loc_i);
*/
/**************************************** EXAMPLE: HISTOGRAM BEAM ENERGY *****************************************/
//Histogram beam energy (if haven't already)
if(locUsedSoFar_BeamEnergy.find(locBeamID) == locUsedSoFar_BeamEnergy.end())
{
dHist_BeamEnergy->Fill(locBeamP4.E()); // Fills in-time and out-of-time beam photon combos
//dHist_BeamEnergy->Fill(locBeamP4.E(),locHistAccidWeightFactor); // Alternate version with accidental subtraction
locUsedSoFar_BeamEnergy.insert(locBeamID);
}
/************************************ EXAMPLE: HISTOGRAM MISSING MASS SQUARED ************************************/
//Missing Mass Squared
double locMissingMassSquared = locMissingP4_Measured.M2();
//////////////////////////////////////////////////////////////////
// DEFINING SELECTIONS AND INTERESTING VARIABLES
//////////////////////////////////////////////////////////////////
//// 1. NEUTRAL SHOWER RELATED (selecting good photons)
// Low energy photons are more likely to be spurious, require a minimum E
bool bPhotonE=(locPhoton1P4.E()>0.1)*(locPhoton2P4.E()>0.1)*(locPhoton3P4.E()>0.1)*(locPhoton4P4.E()>0.1);
// Working in degrees instead of radians, we remove photons near the beamline (<~2.5) and near the BCAL/FCAL transition (<~11.9, >~10.3)
bool bPhotonTheta=
((locPhoton1P4.Theta()*radToDeg>=2.5 && locPhoton1P4.Theta()*radToDeg<=10.3) || locPhoton1P4.Theta()*radToDeg>=11.9)*
((locPhoton2P4.Theta()*radToDeg>=2.5 && locPhoton2P4.Theta()*radToDeg<=10.3) || locPhoton2P4.Theta()*radToDeg>=11.9)*
((locPhoton3P4.Theta()*radToDeg>=2.5 && locPhoton3P4.Theta()*radToDeg<=10.3) || locPhoton3P4.Theta()*radToDeg>=11.9)*
((locPhoton4P4.Theta()*radToDeg>=2.5 && locPhoton4P4.Theta()*radToDeg<=10.3) || locPhoton4P4.Theta()*radToDeg>=11.9);
//// 2. CHARGED TRACK RELATED (selecting good protons)
// protons need some momentum be reconstructed properly
bool bProtonMomentum=locProtonP4.Vect().Mag()>0.3;
// separate proton/pi+ based on energy loss in CDC
bool bProton_dEdx=dProtonWrapper->Get_dEdx_CDC()>=TMath::Power(10,-6)*(0.9+TMath::Exp(3.0-3.5*(locProtonP4.Vect().Mag()+0.05)/.93827));
// require proton to come from ~ the target region [52,78]centimeters
bool bProtonZ = 52 <= locProtonX4.Z() && locProtonX4.Z() <= 78;
//// 3. EXCLUSIVITY RELATED (ensure we select exclusive gp->4gp reaction)
// Kinematic fit for this tree only attempts to quantify how well conservation of 4-momentum is maintained
// 4 NDF in this fit where 13.277 corresponds to a p=0.01
bool bChiSq=dComboWrapper->Get_ChiSq_KinFit("")<13.277;
// Unused energy is the sum of unused neutral shower energy not used by this current combo
// require no unused energy meaning the event only has 4 neutral shower hypotheses to limit final state combinatorics
bool bUnusedEnergy=dComboWrapper->Get_Energy_UnusedShowers()<0.05;
// No missing particles are expected = no missing mass
bool bMMsq=abs(locMissingMassSquared)<0.05;
//// 4. KINEMATICS RELATED (extra selections related to kinematics)
float Mpi0p=(locPi0P4+locProtonP4).M();
float Metap=(locEtaP4+locProtonP4).M();
float Metapi0=(locPi0P4+locEtaP4).M();
float mandelstam_t=-(dTargetP4-locProtonP4).M2();
float mandelstam_teta = -(locBeamP4-locEtaP4).M2();
float mandelstam_tpi0 = -(locBeamP4-locPi0P4).M2();
// Select on coherent peak for region of high polarization. The AMPTOOLS fit using Zlm amplitudes will use the polarization
// for extra separation power (will tell us something about the production mechanism)
bool bBeamEnergy=(locBeamP4.E()>8.2)*(locBeamP4.E()<8.8);
bool bMetapi0 = (Metapi0>1.04)*(Metapi0<1.80); // Select the a2(1320) mass region
// Meson production occurs with small-t whereas baryon production occurs with large-t. This analysis cares about mesons
bool bmandelstamt=(mandelstam_t<1.0)*(mandelstam_t>0.1);
// There are a few baryon resonances, the Delta+(1232) being the largest. We can reject it
bool bMpi0p=Mpi0p>1.4;
// We are interested in the eta+pi0 system where we can see multiple resonances
// in the mass spectra. The spin of the resonance has a direct influence
// on the decay angular distributions of the daughter particles (eta/pi)
// The helicity frame and Gottfried-Jackson frame are both in the rest
// frame of the etapi system and requires a redefinition of the axes.
// For this analysis, the helicity frame will be used as the amplitudes
// that you will use are based on this frame
// First we need to boost to center of mass frame
TLorentzRotation cmRestBoost( -(locBeamP4+dTargetP4).BoostVector() );
TLorentzVector pi0_cm = cmRestBoost * locPi0P4;
TLorentzVector eta_cm = cmRestBoost * locEtaP4;
TLorentzVector beam_cm = cmRestBoost * locBeamP4;
TLorentzVector recoil_cm = cmRestBoost * locProtonP4;
TLorentzVector resonance = pi0_cm + eta_cm;
// We boost again, now to the resonances rest frame
TLorentzRotation resRestBoost( -resonance.BoostVector() );
TLorentzVector beam_res = resRestBoost * beam_cm;
TLorentzVector recoil_res = resRestBoost * recoil_cm;
TLorentzVector eta_res = resRestBoost * eta_cm;
//// Redefinition of the axes
TVector3 z = -1. * recoil_res.Vect().Unit(); // CALCULATING FOR Helicity frame
TVector3 y = (beam_cm.Vect().Unit().Cross(-recoil_cm.Vect().Unit())).Unit();
TVector3 x = y.Cross(z);
TVector3 angles( (eta_res.Vect()).Dot(x),
(eta_res.Vect()).Dot(y),
(eta_res.Vect()).Dot(z) );
float cosTheta_hel = angles.CosTheta();
float phi_hel = angles.Phi();
z = beam_res.Vect().Unit(); // CALCULATING FOR Gottfried-Jackson frame
x = y.Cross(z);
angles.SetXYZ( (eta_res.Vect()).Dot(x),
(eta_res.Vect()).Dot(y),
(eta_res.Vect()).Dot(z) );
float cosTheta_gj = angles.CosTheta();
float phi_gj = angles.Phi();
TVector3 eps(TMath::Cos(locPolarizationAngle*TMath::DegToRad()), TMath::Sin(locPolarizationAngle*TMath::DegToRad()), 0.0); // beam polarization vector
float Phi = TMath::ATan2(y.Dot(eps), beam_cm.Vect().Unit().Dot(eps.Cross(y)))*radToDeg;
float mandelstam_t0 = -(TMath::Power(-(locPi0P4+locEtaP4).M2()/(2*(locBeamP4+dTargetP4).M()),2)
-TMath::Power(beam_cm.Vect().Mag()-(pi0_cm+eta_cm).Vect().Mag(),2));
float mandelstam_tp = mandelstam_t-mandelstam_t0;
std::tuple<double, double> vh = dAnalysisUtilities.Calc_vanHoveCoord(recoil_cm,pi0_cm,eta_cm);
float q = get<0>(vh);
float omega = get<1>(vh);
float vanHove_x=q*cos(omega);
float vanHove_y=q*sin(omega);
bool bVH_pi0p = -29.0*atan(-1.05*(locPi0P4+locEtaP4).M()+2.78)+328 > omega*radToDeg;
float pVH=(float)filterOmega(omega*radToDeg,(locPi0P4+locEtaP4).M());
// 5. With the above selections and sidebands stucture, the subtraction near threshold has problems
// The backgrounds that populate the near threshold region are pi0pi0->4g and omega->3gamma
// These backgrounds tend to populate the lower masses in the alternative (not {g1g2~pi0,g3g4~eta}) photon pairs
float Mg1g3=(locPhoton1P4+locPhoton3P4).M();
float Mg1g4=(locPhoton1P4+locPhoton4P4).M();
float Mg2g3=(locPhoton2P4+locPhoton3P4).M();
float Mg2g4=(locPhoton2P4+locPhoton4P4).M();
bool bLowMassAltCombo=
!(((Mg1g3<0.15)*(Mg2g4<0.15)) || ((Mg1g4<0.15)*(Mg2g3<0.15)) ||
((Mg1g3<0.12)*(Mg2g3<0.12)) || ((Mg1g4<0.12)*(Mg2g4<0.12)));
// Turn off some selections (if you want) related to M(4g) and t so that we can use another program to
// split the final flat trees up. This should lower our total run times
bMetapi0=true;
bmandelstamt=true;
bMpi0p=true;
// bLowMassAltCombo=true;
bBeamEnergy=true;
///////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////
//// We can finally multiply all of our selections together to define our final selection criteria.
// Since we have defined SELECTIONS we have to flip the boolean to get a CUT since the
// FLAG used asks if the combo should be cut
// Choice 0: Simple loose selections to filter the phase 1 data to a more managable size
//bool selection=(dComboWrapper->Get_ChiSq_KinFit("")<100)*(dComboWrapper->Get_Energy_UnusedShowers()<0.5);
// Choice 1: Do not make any selections
//bool selection=true;
// Choice 2: Only make the beam energy selection for event selection showcase for thesis
//bool selection=bBeamEnergy;
// : For similar study above, for chiSq cut tuning and final thesis event selection plots
//bool selection=bPhotonE*bPhotonTheta*bProtonMomentum*bProton_dEdx*bProtonZ*(dComboWrapper->Get_ChiSq_KinFit("")<100)*bUnusedEnergy*bMMsq*bBeamEnergy*
// bmandelstamt*bMpi0p*bMetapi0*bSignalRegion;
// Choice 3: Nominal selection for a2 pwa
bool selection=bBeamEnergy*bChiSq*bUnusedEnergy*bPhotonTheta*bProtonZ*bPhotonE*bProton_dEdx*bProtonMomentum*bMMsq*
bmandelstamt*bMpi0p*bLowMassAltCombo*bMetapi0*bSignalRegion;
// Choice 3.1: Loose selections for a2 pwa for systematic variations
// 1/27/23 - turned off unused energy selection so we can understand number of unused shower selection
//bool selection=bBeamEnergy*(dComboWrapper->Get_ChiSq_KinFit("")<25)* //(dComboWrapper->Get_Energy_UnusedShowers()<0.5)*
// ((locPhoton1P4.Theta()*radToDeg>=1.5 && locPhoton1P4.Theta()*radToDeg<=11) || locPhoton1P4.Theta()*radToDeg>=11.4)*
// ((locPhoton2P4.Theta()*radToDeg>=1.5 && locPhoton2P4.Theta()*radToDeg<=11) || locPhoton2P4.Theta()*radToDeg>=11.4)*
// ((locPhoton3P4.Theta()*radToDeg>=1.5 && locPhoton3P4.Theta()*radToDeg<=11) || locPhoton3P4.Theta()*radToDeg>=11.4)*
// ((locPhoton4P4.Theta()*radToDeg>=1.5 && locPhoton4P4.Theta()*radToDeg<=11) || locPhoton4P4.Theta()*radToDeg>=11.4)*
// (locProtonX4.Z()>50)*(locProtonX4.Z()<80)*
// bPhotonE*bProton_dEdx*bProtonMomentum*bMMsq* // These selections remain unchanged (systematic only going tighter) - MMSq selection removed
// bSignalRegion;
// Choice 4: Nominal selections for double Regge beam asymmetry systematic studies. Loosen most cuts.
// MANUALLY COMMENT OUT bWeight FILTERING LINE BELOW
//bool selection=(Metapi0>1.6)*(Metapi0<3.0)*bBeamEnergy*(dComboWrapper->Get_ChiSq_KinFit("")<50)*(dComboWrapper->Get_Energy_UnusedShowers()<10)*
// ((locPhoton1P4.Theta()*radToDeg>=1.5 && locPhoton1P4.Theta()*radToDeg<=11) || locPhoton1P4.Theta()*radToDeg>=11.4)*
// ((locPhoton2P4.Theta()*radToDeg>=1.5 && locPhoton2P4.Theta()*radToDeg<=11) || locPhoton2P4.Theta()*radToDeg>=11.4)*
// ((locPhoton3P4.Theta()*radToDeg>=1.5 && locPhoton3P4.Theta()*radToDeg<=11) || locPhoton3P4.Theta()*radToDeg>=11.4)*
// ((locPhoton4P4.Theta()*radToDeg>=1.5 && locPhoton4P4.Theta()*radToDeg<=11) || locPhoton4P4.Theta()*radToDeg>=11.4)*
// (locProtonX4.Z()>50)*(locProtonX4.Z()<80)*
// bPhotonE*bProton_dEdx*bProtonMomentum* // These selections remain unchanged (systematic only going tighter) - MMSq selection removed
// ((mandelstam_tpi0<1.0)||(mandelstam_teta<1.0)); // We only care about events where the eta or pion is fast
///////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////
// We generally do not want to apply a cut on a histogram we are trying to view. To this extent,
// we will just apply all other selections that are not used in the current plot
// i.e. if we want to plot MMSq we will apply all selections EXCEPT for bMMsq
if (bPhotonE*bPhotonTheta*bProtonMomentum*bProton_dEdx*bProtonZ*bChiSq*bUnusedEnergy*bMMsq*bBeamEnergy*bmandelstamt*
bMpi0p*bLowMassAltCombo*bMetapi0*bSignalRegion)
{
dHist_Mpi0->Fill((locPhoton1P4+locPhoton2P4).M(),locHistAccidWeightFactor);
dHist_Meta->Fill((locPhoton3P4+locPhoton4P4).M(),locHistAccidWeightFactor);
}
if (!bWeight){
// Turn ON for a2 study: We do not want to keep any combos with weight 0. Not just a waste of space, can cause problems during fitting
// Turn OFF for double regge study since we do sideband subtraction separately there
dComboWrapper->Set_IsComboCut(true);
continue;
}
if(bPhotonE*bPhotonTheta*bProtonMomentum*bProton_dEdx*bProtonZ*bChiSq*bUnusedEnergy*bBeamEnergy*bmandelstamt*bMpi0p*bLowMassAltCombo*bMetapi0*bSignalRegion){
dHist_mmsq->Fill(locMissingMassSquared,weight);}
if(bPhotonE*bProtonMomentum*bProton_dEdx*bProtonZ*bChiSq*bUnusedEnergy*bMMsq*bBeamEnergy*bmandelstamt*bMpi0p*bLowMassAltCombo*bMetapi0*bSignalRegion){
dHist_photonThetaPi0->Fill(locPhoton1P4.Theta()*radToDeg,weight);
dHist_photonThetaPi0->Fill(locPhoton2P4.Theta()*radToDeg,weight);
dHist_photonThetaEta->Fill(locPhoton3P4.Theta()*radToDeg,weight);
dHist_photonThetaEta->Fill(locPhoton4P4.Theta()*radToDeg,weight);}
if(bPhotonE*bPhotonTheta*bProtonZ*bChiSq*bUnusedEnergy*bMMsq*bBeamEnergy*bmandelstamt*bMpi0p*bLowMassAltCombo*bMetapi0*bSignalRegion){
dHist_dEdx_momentum->Fill(locProtonP4.Vect().Mag(),dProtonWrapper->Get_dEdx_CDC(),weight);}
if(bPhotonE*bPhotonTheta*bProtonMomentum*bProton_dEdx*bChiSq*bUnusedEnergy*bMMsq*bBeamEnergy*bmandelstamt*bMpi0p*bLowMassAltCombo*bMetapi0*bSignalRegion){
dHist_protonZ->Fill(locProtonX4.Z(),weight);}
if(bPhotonE*bPhotonTheta*bProtonMomentum*bProton_dEdx*bProtonZ*bChiSq*bUnusedEnergy*bMMsq*bBeamEnergy*bMpi0p*bLowMassAltCombo*bMetapi0*bSignalRegion){
dHist_t->Fill(mandelstam_t,weight);}
if(bPhotonE*bPhotonTheta*bProtonMomentum*bProton_dEdx*bProtonZ*bChiSq*bUnusedEnergy*bMMsq*bBeamEnergy*bmandelstamt*bLowMassAltCombo*bMetapi0*bSignalRegion){
dHist_Mpi0p->Fill(Mpi0p,weight);}
if(bPhotonE*bPhotonTheta*bProtonMomentum*bProton_dEdx*bProtonZ*bUnusedEnergy*bMMsq*bBeamEnergy*bmandelstamt*bMpi0p*bLowMassAltCombo*bMetapi0*bSignalRegion){
dHist_chiSq->Fill(dComboWrapper->Get_ChiSq_KinFit(""),weight);}
if(bPhotonE*bPhotonTheta*bProtonMomentum*bProton_dEdx*bProtonZ*bChiSq*bUnusedEnergy*bMMsq*bBeamEnergy*bmandelstamt*bMpi0p*bLowMassAltCombo*bSignalRegion){
dHist_Metapi_sig->Fill(Metapi0,weight);
dHist_cosThetaHelVsMetapi0->Fill(Metapi0,cosTheta_hel,weight);
dHist_cosThetaGJVsMetapi0->Fill(Metapi0,cosTheta_gj,weight);
if ( (pi0_sbweight==1)*(eta_sbweight==1) )
dHist_Metapi_tot->Fill(Metapi0,locHistAccidWeightFactor);
else
dHist_Metapi_bkg->Fill(Metapi0,locHistAccidWeightFactor*sbweight);
}
//E.g. Cut
if(!selection){
dComboWrapper->Set_IsComboCut(true);
continue;
}
++combos_remaining;
combo_weight+=weight;
dHist_rf->Fill(locDeltaT_RF);
dHist_Metap->Fill(Metap,weight);
/****************************************** FILL FLAT TREE (IF DESIRED) ******************************************/
// RECOMMENDED: FILL ACCIDENTAL WEIGHT
// dFlatTreeInterface->Fill_Fundamental<Double_t>("accidweight",locHistAccidWeightFactor);
/*
//FILL ANY CUSTOM BRANCHES FIRST!!
Int_t locMyInt_Flat = 7;
dFlatTreeInterface->Fill_Fundamental<Int_t>("flat_my_int", locMyInt_Flat);
TLorentzVector locMyP4_Flat(4.0, 3.0, 2.0, 1.0);
dFlatTreeInterface->Fill_TObject<TLorentzVector>("flat_my_p4", locMyP4_Flat);
for(int loc_j = 0; loc_j < locMyInt_Flat; ++loc_j)
{
dFlatTreeInterface->Fill_Fundamental<Int_t>("flat_my_int_array", 3*loc_j, loc_j); //2nd argument = value, 3rd = array index
TLorentzVector locMyComboP4_Flat(8.0, 7.0, 6.0, 5.0);
dFlatTreeInterface->Fill_TObject<TLorentzVector>("flat_my_p4_array", locMyComboP4_Flat, loc_j);
}
*/
if (dFlatTreeFileName!=""){
// Photon Related
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonTheta1", locPhoton1P4.Theta()*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonTheta2", locPhoton2P4.Theta()*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonTheta3", locPhoton3P4.Theta()*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonTheta4", locPhoton4P4.Theta()*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonE1", locPhoton1P4.E());
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonE2", locPhoton2P4.E());
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonE3", locPhoton3P4.E());
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonE4", locPhoton4P4.E());
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonSystem1", locPhoton1System);
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonSystem2", locPhoton2System);
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonSystem3", locPhoton3System);
dFlatTreeInterface->Fill_Fundamental<Float_t>("photonSystem4", locPhoton4System);
dFlatTreeInterface->Fill_Fundamental<Bool_t>("pPhotonE", bPhotonE);
dFlatTreeInterface->Fill_Fundamental<Bool_t>("pPhotonTheta", bPhotonTheta);
// Proton Related
dFlatTreeInterface->Fill_Fundamental<Float_t>("proton_momentum", locProtonP4.Vect().Mag());
dFlatTreeInterface->Fill_Fundamental<Float_t>("proton_z", locProtonX4.Z());
dFlatTreeInterface->Fill_Fundamental<Float_t>("proton_R", TMath::Sqrt(TMath::Power(locProtonX4.X(),2)+TMath::Power(locProtonX4.Y(),2)));
dFlatTreeInterface->Fill_Fundamental<Float_t>("proton_dEdxCDC", dProtonWrapper->Get_dEdx_CDC());
dFlatTreeInterface->Fill_Fundamental<Bool_t>("pMagP3Proton", bProtonMomentum);
dFlatTreeInterface->Fill_Fundamental<Bool_t>("pzCutmin", bProtonZ);
dFlatTreeInterface->Fill_Fundamental<Bool_t>("pdEdxCDCProton", bProton_dEdx);
// Exclusivity Related
dFlatTreeInterface->Fill_Fundamental<Float_t>("DOFKinFit", dComboWrapper->Get_NDF_KinFit(""));
dFlatTreeInterface->Fill_Fundamental<Float_t>("chiSq", dComboWrapper->Get_ChiSq_KinFit(""));
dFlatTreeInterface->Fill_Fundamental<Float_t>("unusedEnergy",dComboWrapper->Get_Energy_UnusedShowers());
dFlatTreeInterface->Fill_Fundamental<Float_t>("unusedShowers",(float)(dComboWrapper->Get_NumUnusedShowers()));
dFlatTreeInterface->Fill_Fundamental<Float_t>("mmsq",locMissingMassSquared);
dFlatTreeInterface->Fill_Fundamental<Bool_t>("pMissingMassSquared", bMMsq);
// Kinematics Related
dFlatTreeInterface->Fill_Fundamental<Float_t>("mismatchPairMass_13", Mg1g3);
dFlatTreeInterface->Fill_Fundamental<Float_t>("mismatchPairMass_24", Mg2g4);
dFlatTreeInterface->Fill_Fundamental<Float_t>("mismatchPairMass_23", Mg2g3);
dFlatTreeInterface->Fill_Fundamental<Float_t>("mismatchPairMass_14", Mg1g4);
dFlatTreeInterface->Fill_Fundamental<Bool_t>("omegaCut",bLowMassAltCombo);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Mpi0p",Mpi0p);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Metap",Metap);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Mpi0g3",(locPi0P4+locPhoton3P4).M());
dFlatTreeInterface->Fill_Fundamental<Float_t>("Mpi0g4",(locPi0P4+locPhoton4P4).M());
dFlatTreeInterface->Fill_Fundamental<Float_t>("Mpi0",Mpi0);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Meta",Meta);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Mpi0eta",Metapi0);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Ebeam",locBeamP4.E());
dFlatTreeInterface->Fill_Fundamental<Float_t>("mandelstam_tp",mandelstam_tp);
dFlatTreeInterface->Fill_Fundamental<Float_t>("mandelstam_t",mandelstam_t);
dFlatTreeInterface->Fill_Fundamental<Float_t>("mandelstam_teta",mandelstam_teta);
dFlatTreeInterface->Fill_Fundamental<Float_t>("mandelstam_tpi0",mandelstam_tpi0);
////// Angles related
dFlatTreeInterface->Fill_Fundamental<Float_t>("Phi",Phi);
dFlatTreeInterface->Fill_Fundamental<Float_t>("cosTheta_X_cm",(pi0_cm+eta_cm).CosTheta());
dFlatTreeInterface->Fill_Fundamental<Float_t>("phi_X_cm",(pi0_cm+eta_cm).Phi()*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("cosTheta_eta_cm",eta_cm.CosTheta());
dFlatTreeInterface->Fill_Fundamental<Float_t>("cosTheta_pi0_cm",pi0_cm.CosTheta());
dFlatTreeInterface->Fill_Fundamental<Float_t>("phi_X_lab",(locPi0P4+locEtaP4).Phi()*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("phi_eta_lab",locEtaP4.Phi()*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("phi_pi0_lab",locPi0P4.Phi()*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("cosTheta_eta_gj", cosTheta_gj);
dFlatTreeInterface->Fill_Fundamental<Float_t>("phi_eta_gj", phi_gj*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("cosTheta_eta_hel",cosTheta_hel);
dFlatTreeInterface->Fill_Fundamental<Float_t>("phi_eta_hel",phi_hel*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("vanHove_omega",omega*radToDeg);
dFlatTreeInterface->Fill_Fundamental<Float_t>("vanHove_x",vanHove_x);
dFlatTreeInterface->Fill_Fundamental<Float_t>("vanHove_y",vanHove_y);
dFlatTreeInterface->Fill_Fundamental<Float_t>("pVH", pVH);
// Weighting Related
dFlatTreeInterface->Fill_Fundamental<Float_t>("AccWeight", locHistAccidWeightFactor);
dFlatTreeInterface->Fill_Fundamental<Float_t>("weightASBS", weight);
dFlatTreeInterface->Fill_Fundamental<Float_t>("weightBS", sbweight);
dFlatTreeInterface->Fill_Fundamental<Float_t>("weightBSpi0", pi0_sbweight);
dFlatTreeInterface->Fill_Fundamental<Float_t>("weightBSeta", eta_sbweight);
dFlatTreeInterface->Fill_Fundamental<Float_t>("rfTime", locDeltaT_RF);
// Thrown Variables
dFlatTreeInterface->Fill_Fundamental<Float_t>("Mpi0eta_thrown",locMetapi0_thrown);
dFlatTreeInterface->Fill_Fundamental<Float_t>("mandelstam_t_thrown",locT_thrown);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Ebeam_thrown",locBeamE_thrown);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Mpi0p_thrown",locMpi0p_thrown);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Metap_thrown",locMetap_thrown);
dFlatTreeInterface->Fill_Fundamental<Bool_t>("isCorrectCombo",isCorrectCombo);
dFlatTreeInterface->Fill_Fundamental<Bool_t>("isCorrectBeam",isCorrectBeam);
dFlatTreeInterface->Fill_Fundamental<Bool_t>("isCorrectSpect",isCorrectSpect);
// Event Related
dFlatTreeInterface->Fill_Fundamental<Int_t>("event",Get_EventNumber());
dFlatTreeInterface->Fill_Fundamental<Int_t>("run",Get_RunNumber());
if (mapTopologyToInt.find(locThrownTopology)==mapTopologyToInt.end()){
dFlatTreeInterface->Fill_Fundamental<Int_t>("topologyId",-1);
}
else
dFlatTreeInterface->Fill_Fundamental<Int_t>("topologyId",mapTopologyToInt[locThrownTopology]);
// AmpTools tree output - step 3
// Filling the branches of the flat tree
vector<TLorentzVector> locFinalStateP4; // should be in the same order as PID_FinalState
locFinalStateP4.push_back(locProtonP4);
locFinalStateP4.push_back(locPi0P4);
locFinalStateP4.push_back(locEtaP4);
dFlatTreeInterface->Fill_Fundamental<Float_t>("Weight", branchWeight);
dFlatTreeInterface->Fill_Fundamental<Int_t>("BeamAngle", locPolarizationAngle); // include so we can split on this branch later
dFlatTreeInterface->Fill_Fundamental<Float_t>("Target_Mass", 0.9382720); // Necesary for divideData.pl not for AmpTools itself (I think)
dFlatTreeInterface->Fill_Fundamental<Int_t>("PID_FinalState", 2212, 0); // proton
dFlatTreeInterface->Fill_Fundamental<Int_t>("PID_FinalState", 111, 1); // Pi0
dFlatTreeInterface->Fill_Fundamental<Int_t>("PID_FinalState", 221, 2); // Eta