Bug fix. Missing {} that was causing a false information message that the trigger...
[u/mrichter/AliRoot.git] / MONITOR / AliMonitorV0s.cxx
1 /**************************************************************************
2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3  *                                                                        *
4  * Author: The ALICE Off-line Project.                                    *
5  * Contributors are mentioned in the code where appropriate.              *
6  *                                                                        *
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11  * appear in the supporting documentation. The authors make no claims     *
12  * about the suitability of this software for any purpose. It is          *
13  * provided "as is" without express or implied warranty.                  *
14  **************************************************************************/
15
16 /* $Id$ */
17
18 ///////////////////////////////////////////////////////////////////////////////
19 //                                                                           //
20 //  This class creates and fills the monitor histograms for V0s              //
21 //                                                                           //
22 ///////////////////////////////////////////////////////////////////////////////
23
24
25 #include "AliMonitorV0s.h"
26 #include "AliMonitorHisto.h"
27 #include "AliESDEvent.h"
28 #include "AliESDv0.h"
29 #include "AliLog.h"
30 #include <TFolder.h>
31 #include <TPDGCode.h>
32 #include <TMath.h>
33
34
35 ClassImp(AliMonitorV0s) 
36
37
38 //_____________________________________________________________________________
39 AliMonitorV0s::AliMonitorV0s():
40   AliMonitor(),
41   fRadius(NULL),
42   fMassK0(NULL),
43   fMassLambda(NULL),
44   fMassAntiLambda(NULL)
45 {
46 // create a monitor object for V0s
47
48 }
49
50 //_____________________________________________________________________________
51 void AliMonitorV0s::CreateHistos(TFolder* folder)
52 {
53 // create the V0s monitor histograms
54
55   fFolder = folder->AddFolder("V0s", "V0s");
56
57   fRadius = CreateHisto1("Radius", "radius of V0 vertices", 
58                          90, 0., 3., "r_{xy} [cm]", 
59                          "#Delta N/N", AliMonitorHisto::kNormEvents);
60
61   fMassK0 = CreateHisto1("MassK0", "invariant mass of K^{0} candidates", 
62                          50, 0.4, 0.6, "m_{#pi^{+}#pi^{-}} [GeV/c^{2}]", 
63                          "#Delta N/N", AliMonitorHisto::kNormEvents);
64
65   fMassLambda = CreateHisto1("MassLambda", 
66                              "invariant mass of #Lambda candidates", 
67                              50, 1.0, 1.2, "m_{p#pi^{-}} [GeV/c^{2}]", 
68                              "#Delta N/N", AliMonitorHisto::kNormEvents);
69
70   fMassAntiLambda = CreateHisto1("MassAntiLambda", 
71                                  "invariant mass of #bar{#Lambda} candidates", 
72                                  50, 1.0, 1.2, 
73                                  "m_{#bar{p}#pi^{+}} [GeV/c^{2}]", 
74                                  "#Delta N/N", AliMonitorHisto::kNormEvents);
75 }
76
77
78 //_____________________________________________________________________________
79 void AliMonitorV0s::FillHistos(AliRunLoader* /*runLoader*/, 
80                                AliRawReader*, AliESDEvent* esd)
81 {
82 // fill the V0s monitor histogrms
83
84   for (Int_t i = 0; i < esd->GetNumberOfV0s(); i++) {
85     AliESDv0* v0 = esd->GetV0(i);
86     if (!v0) continue;
87     Double_t x, y, z;
88     v0->GetXYZ(x, y, z);
89     fRadius->Fill(TMath::Sqrt(x*x + y*y));
90     v0->ChangeMassHypothesis(kK0Short); 
91     fMassK0->Fill(v0->GetEffMass());
92     v0->ChangeMassHypothesis(kLambda0); 
93     fMassLambda->Fill(v0->GetEffMass());
94     v0->ChangeMassHypothesis(kLambda0Bar); 
95     fMassAntiLambda->Fill(v0->GetEffMass());
96   }
97 }