#include <TParticle.h>
#include <TParticlePDG.h>
#include <TH1.h>
+#include <TH2.h>
#include <TH3.h>
+#include <TList.h>
+#include <TTree.h>
+#include <TBranch.h>
+#include <TLeaf.h>
+
+#include <AliHeader.h>
+#include <AliStack.h>
#include <AliLog.h>
#include <AliESD.h>
+#include <AliESDEvent.h>
#include <AliESDVertex.h>
+#include <AliESDRun.h>
+#include <AliVertexerTracks.h>
+#include <AliMultiplicity.h>
+
+#include <AliGenEventHeader.h>
+#include <AliGenPythiaEventHeader.h>
+#include <AliGenCocktailEventHeader.h>
+#include <AliGenDPMjetEventHeader.h>
+#include <AliESDVZERO.h>
//____________________________________________________________________
ClassImp(AliPWG0Helper)
+Int_t AliPWG0Helper::fgLastProcessType = -1;
+
//____________________________________________________________________
-Bool_t AliPWG0Helper::IsEventTriggered(AliESD* aEsd)
+Bool_t AliPWG0Helper::TestVertex(const AliESDVertex* vertex, AnalysisMode analysisMode, Bool_t debug)
{
- // check if the event was triggered
- //
- // this function needs the branch fTriggerMask
- //
- // MB should be
- // ITS_SPD_GFO_L0 : 32
- // VZERO_OR_LEFT : 1
- // VZERO_OR_RIGHT : 2
+ // Checks if a vertex meets the needed quality criteria
- ULong64_t triggerMask = aEsd->GetTriggerMask();
+ Float_t requiredZResolution = -1;
+ if (analysisMode & kSPD || analysisMode & kTPCITS || analysisMode & kTPCSPD)
+ {
+ // disable cut on resolution
+ requiredZResolution = 1000;
+ }
+ else if (analysisMode & kTPC)
+ requiredZResolution = 10.;
- if (triggerMask&32 && ((triggerMask&1) || (triggerMask&2)))
- return kTRUE;
+ // check resolution
+ Double_t zRes = vertex->GetZRes();
- return kFALSE;
+ if (zRes > requiredZResolution) {
+ if (debug)
+ Printf("AliPWG0Helper::TestVertex: Resolution too poor %f (required: %f", zRes, requiredZResolution);
+ return kFALSE;
+ }
+
+ if (vertex->IsFromVertexerZ())
+ {
+ if (vertex->GetDispersion() > 0.02)
+ {
+ if (debug)
+ Printf("AliPWG0Helper::TestVertex: Delta Phi too large in Vertexer Z: %f (required: %f", vertex->GetDispersion(), 0.02);
+ return kFALSE;
+ }
+ }
+
+ return kTRUE;
}
//____________________________________________________________________
-Bool_t AliPWG0Helper::IsVertexReconstructed(AliESD* aEsd)
+const AliESDVertex* AliPWG0Helper::GetVertex(const AliESDEvent* aEsd, AnalysisMode analysisMode, Bool_t debug)
{
- // checks if the vertex is reasonable
+ // Get the vertex from the ESD and returns it if the vertex is valid
//
- // this function needs the branches fSPDVertex*
+ // Second argument decides which vertex is used (this selects
+ // also the quality criteria that are applied)
+ const AliESDVertex* vertex = 0;
+ if (analysisMode & kSPD)
+ {
+ vertex = aEsd->GetPrimaryVertexSPD();
+ if (debug)
+ Printf("AliPWG0Helper::GetVertex: Returning SPD vertex");
+ }
+ else if (analysisMode & kTPCITS || analysisMode & kTPCSPD)
+ {
+ vertex = aEsd->GetPrimaryVertexTracks();
+ if (debug)
+ Printf("AliPWG0Helper::GetVertex: Returning vertex from tracks");
+ if (!vertex || vertex->GetNContributors() <= 0)
+ {
+ if (debug)
+ Printf("AliPWG0Helper::GetVertex: Vertex from tracks has no contributors. Falling back to SPD vertex.");
+ vertex = aEsd->GetPrimaryVertexSPD();
+ }
+ }
+ else if (analysisMode & kTPC)
+ {
+ vertex = aEsd->GetPrimaryVertexTPC();
+ if (debug)
+ Printf("AliPWG0Helper::GetVertex: Returning vertex from TPC-only tracks");
+ }
+ else
+ Printf("AliPWG0Helper::GetVertex: ERROR: Invalid second argument %d", analysisMode);
- const AliESDVertex* vtxESD = aEsd->GetVertex();
+ if (!vertex) {
+ if (debug)
+ Printf("AliPWG0Helper::GetVertex: No vertex found in ESD");
+ return 0;
+ }
- // the vertex should be reconstructed
- if (strcmp(vtxESD->GetName(), "default")==0)
- return kFALSE;
+ // check Ncontributors
+ if (vertex->GetNContributors() <= 0) {
+ if (debug){
+ Printf("AliPWG0Helper::GetVertex: NContributors() <= 0: %d",vertex->GetNContributors());
+ Printf("AliPWG0Helper::GetVertex: NIndices(): %d",vertex->GetNIndices());
+ vertex->Print();
+ }
+ return 0;
+ }
- Double_t vtx_res[3];
- vtx_res[0] = vtxESD->GetXRes();
- vtx_res[1] = vtxESD->GetYRes();
- vtx_res[2] = vtxESD->GetZRes();
+ // check resolution
+ Double_t zRes = vertex->GetZRes();
+ if (zRes == 0) {
+ Printf("AliPWG0Helper::GetVertex: UNEXPECTED: resolution is 0.");
+ return 0;
+ }
- if (vtx_res[2]==0 || vtx_res[2]>0.1)
- return kFALSE;
+ if (debug)
+ {
+ Printf("AliPWG0Helper::GetVertex: Returning valid vertex: %s", vertex->GetTitle());
+ vertex->Print();
+ }
- return kTRUE;
+ return vertex;
}
//____________________________________________________________________
-Bool_t AliPWG0Helper::IsPrimaryCharged(TParticle* aParticle, Int_t aTotalPrimaries, Bool_t debug)
+Bool_t AliPWG0Helper::IsPrimaryCharged(TParticle* aParticle, Int_t aTotalPrimaries, Bool_t adebug)
{
//
// this function checks if a particle from the event generator (i.e. among the nPrim particles in the stack)
//
// This function or a equivalent should be available in some common place of AliRoot
//
+ // WARNING: Call this function only for particles that are among the particles from the event generator!
+ // --> stack->Particle(id) with id < stack->GetNprimary()
// if the particle has a daughter primary, we do not want to count it
if (aParticle->GetFirstDaughter() != -1 && aParticle->GetFirstDaughter() < aTotalPrimaries)
{
- if (debug)
+ if (adebug)
printf("Dropping particle because it has a daughter among the primaries.\n");
return kFALSE;
}
Int_t pdgCode = TMath::Abs(aParticle->GetPdgCode());
+
// skip quarks and gluon
if (pdgCode <= 10 || pdgCode == 21)
{
- if (debug)
+ if (adebug)
printf("Dropping particle because it is a quark or gluon.\n");
return kFALSE;
}
+ Int_t status = aParticle->GetStatusCode();
+ // skip non final state particles..
+ if(status!=1){
+ if (adebug)
+ printf("Dropping particle because it is not a final state particle.\n");
+ return kFALSE;
+ }
+
if (strcmp(aParticle->GetName(),"XXX") == 0)
{
- if (debug)
- printf("WARNING: There is a particle named XXX.\n");
+ Printf("WARNING: There is a particle named XXX (pdg code %d).", pdgCode);
return kFALSE;
}
if (strcmp(pdgPart->ParticleClass(),"Unknown") == 0)
{
- if (debug)
- printf("WARNING: There is a particle with an unknown particle class (pdg code %d).\n", pdgCode);
+ Printf("WARNING: There is a particle with an unknown particle class (pdg code %d).", pdgCode);
return kFALSE;
}
if (pdgPart->Charge() == 0)
{
- if (debug)
+ if (adebug)
printf("Dropping particle because it is not charged.\n");
return kFALSE;
}
}
//____________________________________________________________________
-void AliPWG0Helper::CreateProjections(TH3* hist)
+void AliPWG0Helper::CreateProjections(TH3* hist, Bool_t save)
{
// create projections of 3d hists to all 2d combinations
// the histograms are not returned, just use them from memory or use this to create them in a file
TH1* proj = hist->Project3D("yx");
proj->SetXTitle(hist->GetXaxis()->GetTitle());
proj->SetYTitle(hist->GetYaxis()->GetTitle());
+ if (save)
+ proj->Write();
proj = hist->Project3D("zx");
proj->SetXTitle(hist->GetXaxis()->GetTitle());
proj->SetYTitle(hist->GetZaxis()->GetTitle());
+ if (save)
+ proj->Write();
proj = hist->Project3D("zy");
proj->SetXTitle(hist->GetYaxis()->GetTitle());
proj->SetYTitle(hist->GetZaxis()->GetTitle());
+ if (save)
+ proj->Write();
}
//____________________________________________________________________
-void AliPWG0Helper::CreateDividedProjections(TH3* hist, TH3* hist2, const char* axis, Bool_t putErrors)
+void AliPWG0Helper::CreateDividedProjections(TH3* hist, TH3* hist2, const char* axis, Bool_t putErrors, Bool_t save)
{
// create projections of the 3d hists divides them
// axis decides to which plane, if axis is 0 to all planes
if (axis == 0)
{
- CreateDividedProjections(hist, hist2, "yx", putErrors);
- CreateDividedProjections(hist, hist2, "zx", putErrors);
- CreateDividedProjections(hist, hist2, "zy", putErrors);
+ CreateDividedProjections(hist, hist2, "yx", putErrors, save);
+ CreateDividedProjections(hist, hist2, "zx", putErrors, save);
+ CreateDividedProjections(hist, hist2, "zy", putErrors, save);
return;
}
else if (strlen(axis) == 1)
proj2->SetXTitle(GetAxisTitle(hist2, axis[0]));
- TH1* division = dynamic_cast<TH1*> (proj->Clone(Form("%s_div_%s", proj->GetName(), proj2->GetName())));
- division->Divide(proj2);
+ TH1* division = static_cast<TH1*> (proj->Clone(Form("%s_div_%s", proj->GetName(), proj2->GetName())));
+ //printf("doing axis: %s, x axis has %d %d bins, min %f %f max %f %f\n", axis, division->GetNbinsX(), proj2->GetNbinsX(), division->GetXaxis()->GetBinLowEdge(1), proj2->GetXaxis()->GetBinLowEdge(1), division->GetXaxis()->GetBinUpEdge(division->GetNbinsX()), proj2->GetXaxis()->GetBinUpEdge(proj2->GetNbinsX()));
+ //printf("doing axis: %s, y axis has %d %d bins, min %f %f max %f %f\n", axis, division->GetNbinsY(), proj2->GetNbinsY(), division->GetYaxis()->GetBinLowEdge(1), proj2->GetYaxis()->GetBinLowEdge(1), division->GetYaxis()->GetBinUpEdge(division->GetNbinsY()), proj2->GetYaxis()->GetBinUpEdge(proj2->GetNbinsY()));
+ division->Divide(proj, proj2, 1, 1, "B");
+ division->SetTitle(Form("%s divided %s", proj->GetTitle(), proj2->GetTitle()));
if (putErrors)
{
if (division->GetDimension() == 1)
{
Int_t nBins = division->GetNbinsX();
- for (Int_t i = 0; i <= nBins; ++i)
+ for (Int_t i = 1; i <= nBins; ++i)
if (proj2->GetBinContent(i) != 0)
division->SetBinError(i, TMath::Sqrt(proj->GetBinContent(i)) / proj2->GetBinContent(i));
}
{
Int_t nBinsX = division->GetNbinsX();
Int_t nBinsY = division->GetNbinsY();
- for (Int_t i = 0; i <= nBinsX; ++i)
- for (Int_t j = 0; j <= nBinsY; ++j)
+ for (Int_t i = 1; i <= nBinsX; ++i)
+ for (Int_t j = 1; j <= nBinsY; ++j)
if (proj2->GetBinContent(i, j) != 0)
division->SetBinError(i, j, TMath::Sqrt(proj->GetBinContent(i, j)) / proj2->GetBinContent(i, j));
}
}
+
+ if (save)
+ {
+ proj->Write();
+ proj2->Write();
+ division->Write();
+ }
}
//____________________________________________________________________
return 0;
}
+
+
+AliPWG0Helper::MCProcessType AliPWG0Helper::GetPythiaEventProcessType(AliGenEventHeader* aHeader, Bool_t adebug) {
+
+ AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader);
+
+ if (!pythiaGenHeader) {
+ printf("AliPWG0Helper::GetProcessType : Unknown gen Header type). \n");
+ return kInvalidProcess;
+ }
+
+
+ Int_t pythiaType = pythiaGenHeader->ProcessType();
+ fgLastProcessType = pythiaType;
+ MCProcessType globalType = kInvalidProcess;
+
+
+ if (adebug) {
+ printf("AliPWG0Helper::GetProcessType : Pythia process type found: %d \n",pythiaType);
+ }
+
+
+ if(pythiaType==92||pythiaType==93){
+ globalType = kSD;
+ }
+ else if(pythiaType==94){
+ globalType = kDD;
+ }
+ //else if(pythiaType != 91){ // also exclude elastic to be sure... CKB??
+ else {
+ globalType = kND;
+ }
+ return globalType;
+}
+
+
+AliPWG0Helper::MCProcessType AliPWG0Helper::GetDPMjetEventProcessType(AliGenEventHeader* aHeader, Bool_t adebug) {
+ //
+ // get the process type of the event.
+ //
+
+ // can only read pythia headers, either directly or from cocktalil header
+ AliGenDPMjetEventHeader* dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(aHeader);
+
+ if (!dpmJetGenHeader) {
+ printf("AliPWG0Helper::GetDPMjetProcessType : Unknown header type (not DPMjet or). \n");
+ return kInvalidProcess;
+ }
+
+ Int_t dpmJetType = dpmJetGenHeader->ProcessType();
+ fgLastProcessType = dpmJetType;
+ MCProcessType globalType = kInvalidProcess;
+
+
+ if (adebug) {
+ printf("AliPWG0Helper::GetDPMJetProcessType : DPMJet process type found: %d \n",dpmJetType);
+ }
+
+
+ if (dpmJetType == 1 || dpmJetType == 4) { // explicitly inelastic plus central diffraction
+ globalType = kND;
+ }
+ else if (dpmJetType==5 || dpmJetType==6) {
+ globalType = kSD;
+ }
+ else if (dpmJetType==7) {
+ globalType = kDD;
+ }
+ return globalType;
+}
+
+
+AliPWG0Helper::MCProcessType AliPWG0Helper::GetEventProcessType(AliHeader* aHeader, Bool_t adebug) {
+ //
+ // get the process type of the event.
+ //
+
+
+ // Check for simple headers first
+
+ AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader->GenEventHeader());
+ if (pythiaGenHeader) {
+ return GetPythiaEventProcessType(pythiaGenHeader,adebug);
+ }
+
+ AliGenDPMjetEventHeader* dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(aHeader->GenEventHeader());
+ if (dpmJetGenHeader) {
+ return GetDPMjetEventProcessType(dpmJetGenHeader,adebug);
+ }
+
+
+ // check for cocktail
+
+ AliGenCocktailEventHeader* genCocktailHeader = dynamic_cast<AliGenCocktailEventHeader*>(aHeader->GenEventHeader());
+ if (!genCocktailHeader) {
+ printf("AliPWG0Helper::GetProcessType : Unknown header type (not Pythia or Cocktail). \n");
+ return kInvalidProcess;
+ }
+
+ TList* headerList = genCocktailHeader->GetHeaders();
+ if (!headerList) {
+ return kInvalidProcess;
+ }
+
+ for (Int_t i=0; i<headerList->GetEntries(); i++) {
+
+ pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(headerList->At(i));
+ if (pythiaGenHeader) {
+ return GetPythiaEventProcessType(pythiaGenHeader,adebug);
+ }
+
+ dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(headerList->At(i));
+ if (dpmJetGenHeader) {
+ return GetDPMjetEventProcessType(dpmJetGenHeader,adebug);
+ }
+ }
+ return kInvalidProcess;
+}
+
+
+
+//____________________________________________________________________
+TParticle* AliPWG0Helper::FindPrimaryMother(AliStack* stack, Int_t label)
+{
+ //
+ // Finds the first mother among the primary particles of the particle identified by <label>,
+ // i.e. the primary that "caused" this particle
+ //
+
+ Int_t motherLabel = FindPrimaryMotherLabel(stack, label);
+ if (motherLabel < 0)
+ return 0;
+
+ return stack->Particle(motherLabel);
+}
+
+//____________________________________________________________________
+Int_t AliPWG0Helper::FindPrimaryMotherLabel(AliStack* stack, Int_t label)
+{
+ //
+ // Finds the first mother among the primary particles of the particle identified by <label>,
+ // i.e. the primary that "caused" this particle
+ //
+ // returns its label
+ //
+
+ Int_t nPrim = stack->GetNprimary();
+
+ while (label >= nPrim)
+ {
+ //printf("Particle %d (pdg %d) is not a primary. Let's check its mother %d\n", label, mother->GetPdgCode(), mother->GetMother(0));
+
+ TParticle* particle = stack->Particle(label);
+ if (!particle)
+ {
+ AliDebugGeneral("FindPrimaryMother", AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack.", label));
+ return -1;
+ }
+
+ // find mother
+ if (particle->GetMother(0) < 0)
+ {
+ AliDebugGeneral("FindPrimaryMother", AliLog::kError, Form("UNEXPECTED: Could not find mother of secondary particle %d.", label));
+ return -1;
+ }
+
+ label = particle->GetMother(0);
+ }
+
+ return label;
+}
+
+//____________________________________________________________________
+void AliPWG0Helper::NormalizeToBinWidth(TH1* hist)
+{
+ //
+ // normalizes a 1-d histogram to its bin width
+ //
+
+ for (Int_t i=1; i<=hist->GetNbinsX(); ++i)
+ {
+ hist->SetBinContent(i, hist->GetBinContent(i) / hist->GetBinWidth(i));
+ hist->SetBinError(i, hist->GetBinError(i) / hist->GetBinWidth(i));
+ }
+}
+
+//____________________________________________________________________
+void AliPWG0Helper::NormalizeToBinWidth(TH2* hist)
+{
+ //
+ // normalizes a 2-d histogram to its bin width (x width * y width)
+ //
+
+ for (Int_t i=1; i<=hist->GetNbinsX(); ++i)
+ for (Int_t j=1; j<=hist->GetNbinsY(); ++j)
+ {
+ Double_t factor = hist->GetXaxis()->GetBinWidth(i) * hist->GetYaxis()->GetBinWidth(j);
+ hist->SetBinContent(i, j, hist->GetBinContent(i, j) / factor);
+ hist->SetBinError(i, j, hist->GetBinError(i, j) / factor);
+ }
+}
+
+//____________________________________________________________________
+void AliPWG0Helper::PrintConf(AnalysisMode analysisMode, AliTriggerAnalysis::Trigger trigger, AliPWG0Helper::DiffTreatment diffTreatment)
+{
+ //
+ // Prints the given configuration
+ //
+
+ TString str(">>>> Running with >");
+
+ if (analysisMode & kSPD)
+ str += "SPD-only";
+
+ if (analysisMode & kSPDOnlyL0)
+ str += " (only L0 clusters)";
+
+ if (analysisMode & kTPC)
+ str += "TPC-only";
+
+ if (analysisMode & kTPCITS)
+ str += "Global tracking";
+
+ if (analysisMode & kTPCSPD)
+ str += "Tracks and tracklets";
+
+ if (analysisMode & kFieldOn)
+ {
+ str += " (with field)";
+ }
+ else
+ str += " (WITHOUT field)";
+
+ str += "< and trigger >";
+ str += AliTriggerAnalysis::GetTriggerName(trigger);
+ str += "< and diffractive treatment >";
+
+ switch (diffTreatment)
+ {
+ case kMCFlags:
+ str += "MC flags";
+ break;
+
+ case kUA5Cuts:
+ str += "UA5 cuts";
+ break;
+
+ case kE710Cuts:
+ str += "E710 cuts";
+ break;
+
+ case kALICEHadronLevel:
+ str += "ALICE hadron level";
+ break;
+ }
+
+ str += "< <<<<";
+
+ Printf("%s", str.Data());
+}
+
+//____________________________________________________________________
+Double_t AliPWG0Helper::Rapidity(Double_t pt, Double_t pz, Double_t m)
+{
+ //
+ // calculates rapidity keeping the sign in case E == pz
+ //
+
+ Double_t energy = TMath::Sqrt(pt*pt+pz*pz+m*m);
+ if (energy != TMath::Abs(pz))
+ return 0.5*TMath::Log((energy+pz)/(energy-pz));
+
+ Printf("W- mt=0");
+ return TMath::Sign(1.e30,pz);
+}
+
+//____________________________________________________________________
+Bool_t AliPWG0Helper::IsHadronLevelSingleDiffractive(AliStack* stack, Float_t cms, Float_t xiMin, Float_t xiMax)
+{
+ //
+ // return if process is single diffractive on hadron level
+ //
+ // xiMax and xiMin cut on M^2/s
+ //
+ // Based on code from Martin Poghoysan
+ //
+
+ TParticle* part1 = 0;
+ TParticle* part2 = 0;
+
+ Double_t smallestY = 1e10;
+ Double_t largestY = -1e10;
+
+ for (Int_t iParticle = 0; iParticle < stack->GetNprimary(); iParticle++)
+ {
+ TParticle* part = stack->Particle(iParticle);
+ if (!part)
+ continue;
+
+ Int_t pdg = TMath::Abs(part->GetPdgCode());
+
+ Int_t child1 = part->GetFirstDaughter();
+ Int_t ist = part->GetStatusCode();
+
+ Int_t mfl = Int_t (pdg / TMath::Power(10, Int_t(TMath::Log10(pdg))));
+ if (child1 > -1 || ist != 1)
+ mfl = 0; // select final state charm and beauty
+ if (!(stack->IsPhysicalPrimary(iParticle) || pdg == 111 || pdg == 3212 || pdg==3124 || mfl >= 4))
+ continue;
+ Int_t imother = part->GetFirstMother();
+ if (imother>0)
+ {
+ TParticle *partM = stack->Particle(imother);
+ Int_t pdgM=TMath::Abs(partM->GetPdgCode());
+ if (pdgM==111 || pdgM==3124 || pdgM==3212)
+ continue;
+ }
+
+ Double_t y = 0;
+
+ // fix for problem with getting mass of particle 3124
+ if (pdg != 3124)
+ y = Rapidity(part->Pt(), part->Pz(), part->GetMass());
+ else
+ y = Rapidity(part->Pt(), part->Pz(), 1.5195);
+
+ if (y < smallestY)
+ {
+ smallestY = y;
+ part1 = part;
+ }
+
+ if (y > largestY)
+ {
+ largestY = y;
+ part2 = part;
+ }
+ }
+
+ if (part1 == 0 || part2 == 0)
+ return kFALSE;
+
+ Int_t pdg1 = part1->GetPdgCode();
+ Int_t pdg2 = part2->GetPdgCode();
+
+ Double_t pt1 = part1->Pt();
+ Double_t pt2 = part2->Pt();
+ Double_t pz1 = part1->Pz();
+ Double_t pz2 = part2->Pz();
+
+ Double_t y1 = TMath::Abs(Rapidity(pt1, pz1, 0.938));
+ Double_t y2 = TMath::Abs(Rapidity(pt2, pz2, 0.938));
+
+ Int_t arm = -99999;
+ if (pdg1 == 2212 && pdg2 == 2212)
+ {
+ if (y1 > y2)
+ arm = 0;
+ else
+ arm = 1;
+ }
+ else if (pdg1 == 2212)
+ arm = 0;
+ else if (pdg2 == 2212)
+ arm = 1;
+
+ Double_t M02s = 1. - 2 * part1->Energy() / cms;
+ Double_t M12s = 1. - 2 * part2->Energy() / cms;
+
+ if (arm == 0 && M02s > xiMin && M02s < xiMax)
+ return kTRUE;
+ else if (arm == 1 && M12s > xiMin && M12s < xiMax)
+ return kTRUE;
+
+ return kFALSE;
+}
+
+//____________________________________________________________________
+AliPWG0Helper::MCProcessType AliPWG0Helper::GetEventProcessType(AliESDEvent* esd, AliHeader* header, AliStack* stack, AliPWG0Helper::DiffTreatment diffTreatment)
+{
+ //
+ // get process type
+ //
+ // diffTreatment:
+ // kMCFlags: use MC flags
+ // kUA5Cuts: SD events are those that have the MC SD flag and fulfill M^2/s < 0.05; DD from MC flag; Remainder is ND
+ // kE710Cuts: SD events are those that have the MC SD flag and fulfill 2 < M^2 < 0.05s; DD from MC flag; Remainder is ND
+ // kALICEHadronLevel: SD events are those that fulfill M^2/s < 0.05; DD from MC flag; Remainder is ND
+ //
+
+ MCProcessType mcProcessType = GetEventProcessType(header);
+
+ if (diffTreatment == kMCFlags)
+ return mcProcessType;
+
+ if (!esd)
+ {
+ Printf("ERROR: AliPWG0Helper::GetEventProcessType: diffTreatment != kMCFlags and esd == 0");
+ return kInvalidProcess;
+ }
+
+ Float_t cms = esd->GetESDRun()->GetBeamEnergy();
+ if (esd->GetESDRun()->IsBeamEnergyIsSqrtSHalfGeV())
+ cms *= 2;
+ //Printf("cms = %f", cms);
+
+ if (diffTreatment == kUA5Cuts && mcProcessType == kSD)
+ {
+ if (IsHadronLevelSingleDiffractive(stack, cms, 0, 0.05))
+ return kSD;
+ }
+ else if (diffTreatment == kE710Cuts && mcProcessType == kSD)
+ {
+ if (IsHadronLevelSingleDiffractive(stack, cms, 2. / cms / cms, 0.05))
+ return kSD;
+ }
+ else if (diffTreatment == kALICEHadronLevel)
+ {
+ if (IsHadronLevelSingleDiffractive(stack, cms, 0, 0.05))
+ return kSD;
+ }
+
+ if (mcProcessType == kSD)
+ return kND;
+
+ return mcProcessType;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff