Added Particle Mass Histograms

AliAnalysisTaskMyTask.cxx

@@ -42,14 +42,14 @@ using namespace std;            // std namespace: so you can do things like 'cou
 ClassImp(AliAnalysisTaskMyTask) // classimp: necessary for root
 
 AliAnalysisTaskMyTask::AliAnalysisTaskMyTask() : AliAnalysisTaskSE(),
-    fESD(0), fOutputList(0), fHistPt(0),    fHistEvents(0)
+    fESD(0), fOutputList(0), fHistPt(0),    fHistEvents(0), fHistMass(0)
 {
     // default constructor, don't allocate memory here!
     // this is used by root for IO purposes, it needs to remain empty
 }
 //_____________________________________________________________________________
 AliAnalysisTaskMyTask::AliAnalysisTaskMyTask(const char* name) : AliAnalysisTaskSE(name),
-    fESD(0), fOutputList(0), fHistPt(0),  fHistEvents(0)
+    fESD(0), fOutputList(0), fHistPt(0),  fHistEvents(0), fHistMass(0)
 {
     // constructor
     DefineInput(0, TChain::Class());    // define the input of the analysis: in this case we take a 'chain' of events
@@ -86,10 +86,16 @@ void AliAnalysisTaskMyTask::UserCreateOutputObjects()
                                         // if requested (dont worry about this now)
 
     // example of a histogram
-    fHistPt = new TH1F("fHistPt", "fHistPt", 100, 0, 10);       // create your histogra
+    fHistPt = new TH1F("fHistPt", "fHistPt", 100, 0, 10);       // create your histogram
     fOutputList->Add(fHistPt);          // don't forget to add it to the list! the list will be written to file, so if you want
                                         // your histogram in the output file, add it to the list!
 
+    // my particle mass histogram
+    Double_t fHistMassEdges[12] = {0.0,0.0005,0.0405,0.08,0.12,0.13,0.17,0.48,0.52,0.92,0.96,1.0}; // 11 bins =>> has 11+1 = 12 edges
+
+    fHistMass = new TH1F("fHistMass","Particle Histogram;M_{particle}", 11, fHistMassEdges);
+    fOutputList->Add(fHistMass);
+
 
     // Histograms for dimuons
     fHistEvents = new TH1F("fHistEvents","fHistEvents;N_{events}",100,0.,10000.);
@@ -111,7 +117,7 @@ void AliAnalysisTaskMyTask::UserExec(Option_t *)
 
     Int_t Event=0;
     Int_t TrigEvent=0;
-    ofstream summaryfile, eventsdetail, vertexdetail;
+    ofstream summaryfile, eventsdetail;
     summaryfile.open ("events_summary.txt",std::ofstream::app);
     eventsdetail.open ("events_detail.txt",std::ofstream::app);
 
@@ -147,8 +153,6 @@ Assumed Units: Mass (GeV/c^2)[CONFIRMED] || Energy (GeV) || Momentum (GeV/c) ||
 
 */
 
-    vertexdetail << "********** Event " << esd_event_id << ": iTracks = "  << iTracks << " **********" << endl << endl;
-    vertexdetail << "Event\tTrack\tGetY()\tGetZ()" << endl << endl;
 
     for(Int_t i(0); i < iTracks; i++) {                 // loop over all these tracks
 
@@ -172,9 +176,10 @@ Assumed Units: Mass (GeV/c^2)[CONFIRMED] || Energy (GeV) || Momentum (GeV/c) ||
 
 	//'fixed' fixes the number of decimal places so numbers are vertically aligned
 
-	vertexdetail << esd_event_id << "\t" << i << "\t" << fixed << track->GetY() << "\t" << track->GetZ() << "\t" << endl;
 
         fHistPt->Fill(track->Pt());                     // plot the pt value of the track in a histogram
+	fHistMass->Fill(Mass);
+
     }
 
     Event++;
@@ -182,7 +187,6 @@ Assumed Units: Mass (GeV/c^2)[CONFIRMED] || Energy (GeV) || Momentum (GeV/c) ||
     fHistEvents->Fill(Event);
     summaryfile.close();
     eventsdetail.close();
-    vertexdetail.close();
 
                                                        // continue until all the tracks are processed
     PostData(1, fOutputList);                           // stream the results the analysis of this event to

AliAnalysisTaskMyTask.h

@@ -22,6 +22,7 @@ class AliAnalysisTaskMyTask : public AliAnalysisTaskSE
         AliESDEvent*            fESD;           //! input event
         TList*                  fOutputList;    //! output list
         TH1F*                   fHistPt;        //! dummy histogram
+	TH1F*			fHistMass;	//!my particle mass histogram !! :D
         TH1F*                   fHistEvents; // Number of events
 
         AliAnalysisTaskMyTask(const AliAnalysisTaskMyTask&); // not implemented

sol-analitica/AliAnalysisTaskMyTask.cxx

@@ -34,6 +34,7 @@
 
 
 Int_t esd_event_id = 0; // global variable to store unique event id
+Int_t EventID = 0; // is equal to esd-event-id until the selected event (one with an appropriate number of tracks) is reached
 
 class AliAnalysisTaskMyTask;    // your analysis class
 
@@ -42,14 +43,14 @@ using namespace std;            // std namespace: so you can do things like 'cou
 ClassImp(AliAnalysisTaskMyTask) // classimp: necessary for root
 
 AliAnalysisTaskMyTask::AliAnalysisTaskMyTask() : AliAnalysisTaskSE(),
-    fESD(0), fOutputList(0), fHistPt(0),    fHistEvents(0)
+    fESD(0), fOutputList(0), fHistPt(0),    fHistEvents(0), fHistMass(0)
 {
     // default constructor, don't allocate memory here!
     // this is used by root for IO purposes, it needs to remain empty
 }
 //_____________________________________________________________________________
 AliAnalysisTaskMyTask::AliAnalysisTaskMyTask(const char* name) : AliAnalysisTaskSE(name),
-    fESD(0), fOutputList(0), fHistPt(0),  fHistEvents(0)
+    fESD(0), fOutputList(0), fHistPt(0),  fHistEvents(0), fHistMass(0)
 {
     // constructor
     DefineInput(0, TChain::Class());    // define the input of the analysis: in this case we take a 'chain' of events
@@ -90,6 +91,12 @@ void AliAnalysisTaskMyTask::UserCreateOutputObjects()
     fOutputList->Add(fHistPt);          // don't forget to add it to the list! the list will be written to file, so if you want
                                         // your histogram in the output file, add it to the list!
 
+    // my mass histogram
+    Double_t fHistMassEdges[12] = {0.0,0.0005,0.0405,0.08,0.12,0.13,0.17,0.48,0.52,0.92,0.96,1.0}; // 11 bins =>> has 11+1 = 12 edges
+
+    fHistMass = new TH1F("fHistMass","Particle Histogram;M_{particle}", 11, fHistMassEdges);
+    fOutputList->Add(fHistMass);
+
 
     // Histograms for dimuons
     fHistEvents = new TH1F("fHistEvents","fHistEvents;N_{events}",100,0.,10000.);
@@ -141,6 +148,11 @@ Assumed Units: Mass (GeV/c^2)[CONFIRMED] || Energy (GeV) || Momentum (GeV/c) ||
 
 */
 
+    if(EventID == esd_event_id) {
+	if(iTracks >= 15 && iTracks <= 30) {EventID = -1;}
+	else {EventID++;}
+    } else {EventID = -2;}
+
     for(Int_t i(0); i < iTracks; i++) {                 // loop over all these tracks
 
         AliESDtrack* track = static_cast<AliESDtrack*>(fESD->GetTrack(i));         // get a track (type AliESDtrack) from the event
@@ -168,9 +180,17 @@ Assumed Units: Mass (GeV/c^2)[CONFIRMED] || Energy (GeV) || Momentum (GeV/c) ||
 
 	//'fixed' fixes the number of decimal places so numbers are vertically aligned
 
-        fHistPt->Fill(track->Pt());                     // plot the pt value of the track in a histogram
+        fHistPt->Fill(Pt);                     // plot the pt value of the track in a histogram
+
+	if(EventID == -1) { // when we get to the selected event, fill Mass Histogram
+	
+		fHistMass->Fill(Mass);
+	
+	}
+
     }
 
+
     Event++;
     esd_event_id++; // Increment global esd_event_id
     fHistEvents->Fill(Event);

sol-analitica/AliAnalysisTaskMyTask.h

@@ -22,6 +22,7 @@ class AliAnalysisTaskMyTask : public AliAnalysisTaskSE
         AliESDEvent*            fESD;           //! input event
         TList*                  fOutputList;    //! output list
         TH1F*                   fHistPt;        //! dummy histogram
+	TH1F*			fHistMass;      //! my particle histogram!! :D
         TH1F*                   fHistEvents; // Number of events
 
         AliAnalysisTaskMyTask(const AliAnalysisTaskMyTask&); // not implemented