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JetUtilities.C
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JetUtilities.C
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//#include "JetSmear.h"
#include "TRandom.h"
#include "TMath.h"
class JetIndex{
public:
double pt;
int index;
};
bool comparePt(JetIndex a, JetIndex b) {return a.pt > b.pt;}
double getProjectedZ(float* z, float* dtheta, double jetpt, double jeteta, double jetphi, double trackpt, double tracketa, double trackphi, double eventEta = 0){
// Calculate at dijet frame
double jetetaB = jeteta - eventEta;
double tracketaB = tracketa - eventEta;
double thetaJt = 2*atan(exp(-jetetaB));
double thetaTr = 2*atan(exp(-tracketaB));
double dphi = trackphi - jetphi;
double alpha = acos(cos(dphi)*sin(thetaJt)*sin(thetaTr)+cos(thetaJt)*cos(thetaTr));
double pJet = jetpt/sin(thetaJt);
double pTrack = trackpt/sin(thetaTr);
dtheta[1] = alpha;
z[1] = pTrack*cos(alpha)/pJet;
// Calculate at lab frame
eventEta = 0;
jetetaB = jeteta - eventEta;
tracketaB = tracketa - eventEta;
thetaJt = 2*atan(exp(-jetetaB));
thetaTr = 2*atan(exp(-tracketaB));
pJet = jetpt/sin(thetaJt);
pTrack = trackpt/sin(thetaTr);
alpha = acos(cos(dphi)*sin(thetaJt)*sin(thetaTr)+cos(thetaJt)*cos(thetaTr));
z[3] = pTrack*cos(alpha)/pJet;
dtheta[3] = alpha;
// Calculate at track frame
eventEta = tracketa;
jetetaB = jeteta - eventEta;
tracketaB = tracketa - eventEta;
thetaJt = 2*atan(exp(-jetetaB));
thetaTr = 2*atan(exp(-tracketaB));
pJet = jetpt/sin(thetaJt);
pTrack = trackpt/sin(thetaTr);
alpha = acos(cos(dphi)*sin(thetaJt)*sin(thetaTr)+cos(thetaJt)*cos(thetaTr));
z[2] = pTrack*cos(alpha)/pJet;
dtheta[2] = alpha;
// Calculate at jet frame
eventEta = jeteta;
jetetaB = jeteta - eventEta;
tracketaB = tracketa - eventEta;
thetaJt = 2*atan(exp(-jetetaB));
thetaTr = 2*atan(exp(-tracketaB));
pJet = jetpt/sin(thetaJt);
pTrack = trackpt/sin(thetaTr);
alpha = acos(cos(dphi)*sin(thetaJt)*sin(thetaTr)+cos(thetaJt)*cos(thetaTr));
z[0] = pTrack*cos(alpha)/pJet;
dtheta[0] = alpha;
return z[0];
}
int findMatch(double& drmin, Jets jets, double eta, double phi, bool gen = 0, double matchR = 0.3){
drmin = 100;
int m = -1;
double ptmax = 0;
for(int i = 0; i < jets.nref; ++i){
double dr = deltaR(jets.jteta[i],jets.jtphi[i],eta,phi);
double pt = jets.jtpt[i];
if(jets.rawpt[i] < 15) continue;
if(gen && dr < matchR && pt > ptmax){
ptmax = pt;
drmin = dr;
m = i;
}else if(dr < drmin){
drmin = dr;
m = i;
}
}
return m;
}
namespace jetsmear{
static const double par0[3] = {0.0313613,0.00878359,0.0248872};
static const double par1[3] = {1.55023,1.48813,1.41283};
static const double par2[3] = {1.91448,0.607755,0};
// static const double factorDiff[3] = {0.830665,0.954202,1.03942};
// static const double factorSum[3] = {1.99776,1.87422,1.78901};
static const double factorDiff[3] = {1.,1.,1.};
static const double factorSum[3] = {1.,1.,1.};
class JetResolution{
public:
JetResolution(){
for(int i = 0; i < 3; ++i){
fReso[i] = new TF1(Form("fReso_%d",i),"sqrt(pow([0],2)+pow([1]/sqrt(x),2)+pow([2]/x,2)-(pow([3],2)+pow([4]/sqrt(x),2)+pow([5]/x,2)) )",0,300);
fReso[i]->SetParameter(3,1.90344e-10);
fReso[i]->SetParameter(4,1.29908e+00);
fReso[i]->SetParameter(5,2.04609e+00);
fReso[i]->SetParameter(0,par0[i]);
fReso[i]->SetParameter(1,par1[i]);
fReso[i]->SetParameter(2,par2[i]);
}
random = new TRandom();
pi = TMath::Pi();
fGauss = new TF1("fGauss","gaus(0)",-3,3);
fGauss->SetParameter(0,1);
fGauss->SetParameter(1,0);
fCentrality = new TF1("fGauss","pol1",0,3);
fCentrality->SetParameter(0,1.);
fCentrality->SetParameter(1,-0.2034);
}
int roll(){
bin = floor(fCentrality->GetRandom());
if(bin == 3) bin = 2;
phi0 = pi*(random->Uniform());
sum = factorSum[bin]*fGauss->GetRandom();
diff = factorDiff[bin]*fGauss->GetRandom();
return bin;
}
double getFluct1(double pt){
return fReso[bin]->Eval(pt)*(sum+diff)/2.;
}
double getFluct2(double pt){
return fReso[bin]->Eval(pt)*(sum-diff)/2.;
}
double getFluct(Jets jets, int j){
double pt = jets.jtpt[j];
double fluct = getFluct1(pt);
double dphi0 = fabs(deltaPhi(jets.jtphi[j],phi0));
if(dphi0 >= pi/4. && dphi0 <= 3.*pi/4.) fluct = getFluct2(pt);
return pt*fluct;
}
TF1* fReso[3];
TF1* fGauss;
TF1* fCentrality;
TRandom* random;
int bin;
double sum;
double diff;
double fluct1;
double fluct2;
double pi;
double phi0;
};
}
void HiForest::sortJets(TTree* jetTree, Jets& jets, double etaMax, bool allEvents, int smearType){
jetsmear::JetResolution* res = 0;
if(smearType==0){
res = new jetsmear::JetResolution();
}
vector<TBranch*> branches(0);
if(allEvents || currentEvent == 0){
branches.push_back(jetTree->Branch("Lead",&jtLead,"Lead/I"));
branches.push_back(jetTree->Branch("SubLead",&jtSubLead,"SubLead/I"));
branches.push_back(jetTree->Branch("HasDijet",&jtHasDijet,"HasDijet/O"));
branches.push_back(jetTree->Branch("HasLeadingJet",&jtHasLeadingJet,"HasLeadingJet/O"));
if(smearType==0 && !mc){
branches.push_back(jetTree->Branch("smpt",jets.smpt,"smpt[nref]/F"));
}
jetTree->SetAlias("AJ","(jtpt[Lead]-jtpt[SubLead])/(jtpt[Lead]+jtpt[SubLead])");
jetTree->SetAlias("dijetEta","(jteta[Lead]+jteta[SubLead])/2.");
}
vector<JetIndex> vecs;
vecs.reserve(maxEntry);
for (int i=0; allEvents ? i<GetEntries() : 1;i++){
if(verbose && i % 50000 == 0) cout<<"Processing Event : "<<i<<endl;
if(allEvents){
jetTree->GetEntry(i);
}
vecs.clear();
if(smearType == 0)res->roll();
for(int j = 0; j < jets.nref; ++j){
// if(jets.jtpt[j] < ptMin) continue;
if(fabs(jets.jteta[j]) > etaMax) continue;
JetIndex entry;
entry.pt = jets.jtpt[j];
entry.index = j;
if(smearType == 0){
entry.pt += res->getFluct(jets,j);
if(collisionMode == cPbPb && i>=0) cout<<"Flucted"<<endl;
jets.smpt[j] = entry.pt;
jets.jtpt[j] = entry.pt;
}
vecs.push_back(entry);
}
sort(vecs.begin(),vecs.end(),comparePt);
jtLead=-1;
jtSubLead=-1;
jtHasLeadingJet = 0;
jtHasDijet = 0;
if(vecs.size() > 0){
jtLead = vecs[0].index;
if(smearType == 0 && jets.smpt[jtLead] > 100) jtHasLeadingJet = 1;
if(smearType != 0 && jets.jtpt[jtLead] > 100) jtHasLeadingJet = 1;
}
if(vecs.size() > 1){
jtSubLead = vecs[1].index;
if(smearType == 0 &&jets.smpt[jtSubLead] > 40){
jtHasDijet = jtHasLeadingJet && fabs(deltaPhi(jets.jtphi[jtLead],jets.jtphi[jtSubLead])) > 2.*3.1415926/3.;
}
if(smearType != 0 && jets.jtpt[jtSubLead] > 40){
jtHasDijet = jtHasLeadingJet && fabs(deltaPhi(jets.jtphi[jtLead],jets.jtphi[jtSubLead])) > 2.*3.1415926/3.;
}
}
for(unsigned int ib = 0; ib < branches.size(); ++ib){
branches[ib]->Fill();
}
}
return;
}
void HiForest::correlateTracks(TTree* jetTree, Jets& jets, bool allEvents, bool smeared){
vector<TBranch*> branches(0);
if(allEvents || currentEvent == 0){
if(1){
jtChg = new Float_t[maxEntry];
jtNeut = new Float_t[maxEntry];
jtEM = new Float_t[maxEntry];
jtChgGen = new Float_t[maxEntry];
jtNeutGen = new Float_t[maxEntry];
jtEMGen = new Float_t[maxEntry];
jtPtMax = new Float_t[maxEntry];
jtPtMean = new Float_t[maxEntry];
jtPtMeanW = new Float_t[maxEntry];
jtLeadType = new Int_t[maxEntry];
}
tjDeltaEtaLead = new Float_t[maxEntryTrack];
tjDeltaPhiLead = new Float_t[maxEntryTrack];
zLead = new Float_t[maxEntryTrack];
tjDeltaEtaSubLead = new Float_t[maxEntryTrack];
tjDeltaPhiSubLead = new Float_t[maxEntryTrack];
zSubLead = new Float_t[maxEntryTrack];
zOldLead = new Float_t[maxEntryTrack];
zOldSubLead = new Float_t[maxEntryTrack];
zSingleLead = new Float_t[maxEntryTrack];
zLabLead = new Float_t[maxEntryTrack];
tjDeltaThetaLead = new Float_t[maxEntryTrack];
tjDeltaThetaLabLead = new Float_t[maxEntryTrack];
tjDeltaThetaSingleLead = new Float_t[maxEntryTrack];
zSingleSubLead = new Float_t[maxEntryTrack];
zLabSubLead = new Float_t[maxEntryTrack];
tjDeltaThetaSubLead = new Float_t[maxEntryTrack];
tjDeltaThetaLabSubLead = new Float_t[maxEntryTrack];
tjDeltaThetaSingleSubLead = new Float_t[maxEntryTrack];
corrLead = new Float_t[maxEntryTrack];
corrSubLead = new Float_t[maxEntryTrack];
branches.push_back(jetTree->Branch("jtChg",jtChg,"jtChg[nref]/F"));
branches.push_back(jetTree->Branch("jtNeut",jtNeut,"jtNeut[nref]/F"));
branches.push_back(jetTree->Branch("jtEM",jtEM,"jtEM[nref]/F"));
branches.push_back(jetTree->Branch("jtChgGen",jtChgGen,"jtChgGen[nref]/F"));
branches.push_back(jetTree->Branch("jtNeutGen",jtNeutGen,"jtNeutGen[nref]/F"));
branches.push_back(jetTree->Branch("jtEMGen",jtEMGen,"jtEMGen[nref]/F"));
branches.push_back(jetTree->Branch("jtPtMax",jtPtMax,"jtPtMax[nref]/F"));
branches.push_back(jetTree->Branch("jtPtMean",jtPtMean,"jtPtMean[nref]/F"));
branches.push_back(jetTree->Branch("jtPtMeanW",jtPtMeanW,"jtPtMeanW[nref]/F"));
branches.push_back(jetTree->Branch("jtLeadType",jtLeadType,"jtLeadType[nref]/I"));
branches.push_back(trackTree->Branch("tjDetaLead",tjDeltaEtaLead,"tjDetaLead[nTrk]/F"));
branches.push_back(trackTree->Branch("tjDphiLead",tjDeltaPhiLead,"tjDphiLead[nTrk]/F"));
branches.push_back(trackTree->Branch("zLead",zLead,"zLead[nTrk]/F"));
branches.push_back(trackTree->Branch("tjDetaSubLead",tjDeltaEtaSubLead,"tjDetaSubLead[nTrk]/F"));
branches.push_back(trackTree->Branch("tjDphiSubLead",tjDeltaPhiSubLead,"tjDphiSubLead[nTrk]/F"));
branches.push_back(trackTree->Branch("zSubLead",zSubLead,"zSubLead[nTrk]/F"));
branches.push_back(trackTree->Branch("zOldLead",zOldLead,"zOldLead[nTrk]/F"));
branches.push_back(trackTree->Branch("zOldSubLead",zOldSubLead,"zOldSubLead[nTrk]/F"));
branches.push_back(trackTree->Branch("zSingleLead",zSingleLead,"zSingleLead[nTrk]/F"));
branches.push_back(trackTree->Branch("zSingleSubLead",zSingleSubLead,"zSingleSubLead[nTrk]/F"));
branches.push_back(trackTree->Branch("zLabLead",zLabLead,"zLabLead[nTrk]/F"));
branches.push_back(trackTree->Branch("zLabSubLead",zSubLead,"zLabSubLead[nTrk]/F"));
branches.push_back(trackTree->Branch("tjDthetaLead",tjDeltaThetaLead,"tjDthetaLead[nTrk]/F"));
branches.push_back(trackTree->Branch("tjDthetaLabLead",tjDeltaThetaLabLead,"tjDthetaLabLead[nTrk]/F"));
branches.push_back(trackTree->Branch("tjDthetaSingleLead",tjDeltaThetaSingleLead,"tjDthetaSingleLead[nTrk]/F"));
branches.push_back(trackTree->Branch("tjDthetaSubLead",tjDeltaThetaSubLead,"tjDthetaSubLead[nTrk]/F"));
branches.push_back(trackTree->Branch("tjDthetaLabSubLead",tjDeltaThetaLabSubLead,"tjDthetaLabSubLead[nTrk]/F"));
branches.push_back(trackTree->Branch("tjDthetaSingleSubLead",tjDeltaThetaSingleSubLead,"tjDthetaSingleSubLead[nTrk]/F"));
branches.push_back(trackTree->Branch("corrLead",corrLead,"corrLead[nTrk]/F"));
branches.push_back(trackTree->Branch("corrSubLead",corrSubLead,"corrSubLead[nTrk]/F"));
jetTree->SetAlias("jtFracChg","jtChg/jtpt");
jetTree->SetAlias("jtFracNeut","jtNeut/jtpt");
jetTree->SetAlias("jtFracEM","jtFracEM/jtpt");
jetTree->SetAlias("refFracChg","jtChg/refpt");
jetTree->SetAlias("refFracNeut","jtNeut/refpt");
jetTree->SetAlias("refFracEM","jtFracEM/refpt");
jetTree->SetAlias("jtFracChgGen","jtChgGen/jtpt");
jetTree->SetAlias("jtFracNeutGen","jtNeutGen/refpt");
jetTree->SetAlias("jtFracEMGen","jtFracEMGen/refpt");
trackTree->SetAlias("tjDRlead","sqrt(tjDetaLead*tjDetaLead+tjDphiLead*tjDphiLead)");
trackTree->SetAlias("tjDRsublead","sqrt(tjDetaSubLead*tjDetaSubLead+tjDphiSubLead*tjDphiSubLead)");
}
double correctionFactors[4] = {0,0,0,0};
float dummy[5];
for (int i=0; allEvents ? i<GetEntries() : 1;i++){
if(i % 1000 == 0) cout<<"Processing Event : "<<i<<endl;
if(allEvents){
jetTree->GetEntry(i);
trackTree->GetEntry(i);
hltTree->GetEntry(i);
}
int cbin = evt.hiBin;
if(collisionMode == cPP) cbin = 33;
double eventEta = 0;
if(hasDiJet(jets)) eventEta = (jets.jteta[jtLead]+jets.jteta[jtSubLead])/2.;
for(int j = 0; j < jets.nref; ++j){
jtChg[j] = 0;
jtNeut[j] = 0;
jtEM[j] = 0;
jtPtMax[j] = 0;
jtPtMean[j] = 0;
jtPtMeanW[j] = 0;
jtLeadType[j] = 0;
for (int t = 0; t < track.nTrk; ++t) {
double jetPt = jets.jtpt[j];
if(smeared)jetPt = jets.smpt[j];
if(j == jtLead){
tjDeltaEtaLead[t] = track.trkEta[t] - jets.jteta[j];
tjDeltaPhiLead[t] = deltaPhi(track.trkPhi[t],jets.jtphi[j]);
zOldLead[t] = track.trkPt[t]/jetPt;
zLead[t] = getProjectedZ(dummy,dummy,jetPt,jets.jteta[j],jets.jtphi[j],track.trkPt[t],track.trkEta[t],track.trkPhi[t],eventEta);
// cout<<"jtpt : "<<jets.jtpt[j]<<" spt : "<<jets.smpt[j]<<endl;
corrLead[t] = trackCorrections[0]->GetCorr(track.trkPt[t],track.trkEta[t],jetPt,cbin,correctionFactors);
}
if(j == jtSubLead){
tjDeltaEtaSubLead[t] = track.trkEta[t] - jets.jteta[j];
tjDeltaPhiSubLead[t] = deltaPhi(track.trkPhi[t],jets.jtphi[j]);
zSubLead[t] = getProjectedZ(dummy,dummy,jetPt,jets.jteta[j],jets.jtphi[j],track.trkPt[t],track.trkEta[t],track.trkPhi[t],eventEta);
zOldSubLead[t] = track.trkPt[t]/jetPt;
corrSubLead[t] = trackCorrections[1]->GetCorr(track.trkPt[t],track.trkEta[t],jetPt,cbin,correctionFactors);
}
double dr = deltaR(track.trkEta[t],track.trkPhi[t],jets.jteta[j],jets.jtphi[j]);
if(dr > cone) continue;
if(jtPtMax[j] < track.trkPt[t]) jtPtMax[j] = track.trkPt[t];
jtChg[j] += track.trkPt[t];
}
}
for(unsigned int ib = 0; ib < branches.size(); ++ib){
branches[ib]->Fill();
}
}
return;
}
int HiForest::leadingJet(){ return jtLead;}
int HiForest::subleadingJet(){ return jtSubLead;}
int HiForest::thirdJet(){ return -1;}
double HiForest::deltaPhiDijet(Jets& jets){
return fabs(deltaPhi(jets.jtphi[leadingJet()],jets.jtphi[subleadingJet()]));
}
bool HiForest::hasDiJet(Jets& jets, double pt1, double pt2, double dphiMin){
if(jtSubLead < 0 || jtLead < 0) return false;
if(deltaPhiDijet(jets) < dphiMin) return false;
if(jets.jtpt[leadingJet()] < pt1) return false;
if(jets.jtpt[subleadingJet()] < pt2) return false;
return true;
};
//double HiForest::jetFracChg(int i){ return 0;}
//double HiForest::jetFracNeut(int i){ return 0;}
//double HiForest::jetFracEM(int i){ return 0;}
void HiForest::fakeRejection(TTree *jetTree, Jets &jets, bool allEvents)
{
std::vector<TBranch *> branch;
branch.push_back(jetTree->Branch("fr01Chg", jets.fr01Chg,
"fr01Chg[nref]/F"));
branch.push_back(jetTree->Branch("fr01EM", jets.fr01EM,
"fr01EM[nref]/F"));
branch.push_back(jetTree->Branch("fr01", jets.fr01,
"fr01[nref]/F"));
for (int i = 0; i < (allEvents ? GetEntries() : 1); i++) {
if (allEvents) {
jetTree->GetEntry(i);
trackTree->GetEntry(i);
photonTree->GetEntry(i);
if (i % 1000 == 0) {
std::cout << i <<" / "<< GetEntries() << endl;
}
}
for (int j = 0; j < jets.nref; j++) {
float pseudorapidity_adapt = jets.jteta[j];
float azimuth_adapt = jets.jtphi[j];
float max_weighted_perp = 0;
float sum;
jets.fr01Chg[j] = 0;
jets.fr01EM[j] = 0;
// Unadapted discriminant with adaption search
sum = 0;
for (int k = 0; k < track.nTrk; k++) {
const float dpseudorapidity =
track.trkEta[k] - jets.jteta[j];
const float dazimuth =
deltaPhi(track.trkPhi[k], jets.jtphi[j]);
const float angular_weight =
exp(-50.0F * (dpseudorapidity * dpseudorapidity +
dazimuth * dazimuth));
const float weighted_perp =
angular_weight * track.trkPt[k] * track.trkPt[k];
const float weighted_perp_square =
weighted_perp * track.trkPt[k];
sum += weighted_perp_square;
if (weighted_perp >= max_weighted_perp) {
pseudorapidity_adapt = track.trkEta[k];
azimuth_adapt = track.trkPhi[k];
max_weighted_perp = weighted_perp;
}
}
jets.fr01Chg[j] = std::max(jets.fr01Chg[j], sum);
sum = 0;
for (int k = 0; k < photon.nPhotons; k++) {
const float dpseudorapidity =
photon.eta[k] - jets.jteta[j];
const float dazimuth =
deltaPhi(photon.phi[k], jets.jtphi[j]);
const float angular_weight =
exp(-50.0F * (dpseudorapidity * dpseudorapidity +
dazimuth * dazimuth));
const float weighted_perp =
angular_weight * photon.pt[k] * photon.pt[k];
const float weighted_perp_square =
weighted_perp * photon.pt[k];
sum += weighted_perp_square;
if (weighted_perp >= max_weighted_perp) {
pseudorapidity_adapt = photon.eta[k];
azimuth_adapt = photon.phi[k];
max_weighted_perp = weighted_perp;
}
}
jets.fr01EM[j] = std::max(jets.fr01EM[j], sum);
// (First order) adapted discriminant
sum = 0;
for (int k = 0; k < track.nTrk; k++) {
const float dpseudorapidity =
track.trkEta[k] - pseudorapidity_adapt;
const float dazimuth =
deltaPhi(track.trkPhi[k], azimuth_adapt);
const float angular_weight =
exp(-50.0F * (dpseudorapidity * dpseudorapidity +
dazimuth * dazimuth));
const float weighted_perp =
angular_weight * track.trkPt[k] * track.trkPt[k];
const float weighted_perp_square =
weighted_perp * track.trkPt[k];
sum += weighted_perp_square;
}
jets.fr01Chg[j] = std::max(jets.fr01Chg[j], sum);
sum = 0;
for (int k = 0; k < photon.nPhotons; k++) {
const float dpseudorapidity =
photon.eta[k] - jets.jteta[j];
const float dazimuth =
deltaPhi(photon.phi[k], jets.jtphi[j]);
const float angular_weight =
exp(-50.0F * (dpseudorapidity * dpseudorapidity +
dazimuth * dazimuth));
const float weighted_perp =
angular_weight * photon.pt[k] * photon.pt[k];
const float weighted_perp_square =
weighted_perp * photon.pt[k];
sum += weighted_perp_square;
if (weighted_perp >= max_weighted_perp) {
pseudorapidity_adapt = photon.eta[k];
azimuth_adapt = photon.phi[k];
max_weighted_perp = weighted_perp;
}
}
jets.fr01EM[j] = std::max(jets.fr01EM[j], sum);
// Combine charged track and ECAL energy (HCAL is too
// coarse for fake rejection purpose)
jets.fr01[j] = jets.fr01Chg[j] + jets.fr01EM[j];
}
for(std::vector<TBranch *>::const_iterator iterator =
branch.begin();
iterator != branch.end(); iterator++) {
(*iterator)->Fill();
}
}
}
double jetHadFraction(Jets& jets, int ijet, Hits& hbhe, double radius = 0.3){
double x = 0;
double jeteta = jets.jteta[ijet];
double jetphi = jets.jtphi[ijet];
double jetenergy = jets.rawpt[ijet] + jets.jtpu[ijet];
for(int i = 0; i < hbhe.n; ++i){
double eta = hbhe.eta[i];
double phi = hbhe.phi[i];
double dr = deltaR(jeteta,jetphi,eta,phi);
if(dr < radius){
x+= hbhe.et[i];
}
}
return x/jetenergy;
}