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04fa961a | 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 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
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 "AliITSLoader.h" | |
28 | #include "AliV0vertex.h" | |
c4bd737c | 29 | #include "AliRunLoader.h" |
30 | #include <TFolder.h> | |
31 | #include <TTree.h> | |
04fa961a | 32 | #include <TPDGCode.h> |
33 | ||
34 | ||
35 | ClassImp(AliMonitorV0s) | |
36 | ||
37 | ||
38 | //_____________________________________________________________________________ | |
39 | AliMonitorV0s::AliMonitorV0s() | |
40 | { | |
41 | // create a monitor object for V0s | |
42 | ||
43 | } | |
44 | ||
c4bd737c | 45 | //_____________________________________________________________________________ |
46 | AliMonitorV0s::AliMonitorV0s(const AliMonitorV0s& monitor) : | |
47 | AliMonitor(monitor) | |
48 | { | |
49 | Fatal("AliMonitorV0s", "copy constructor not implemented"); | |
50 | } | |
51 | ||
52 | //_____________________________________________________________________________ | |
53 | AliMonitorV0s& AliMonitorV0s::operator = (const AliMonitorV0s& /*monitor*/) | |
54 | { | |
55 | Fatal("operator =", "assignment operator not implemented"); | |
56 | return *this; | |
57 | } | |
58 | ||
04fa961a | 59 | |
60 | //_____________________________________________________________________________ | |
61 | void AliMonitorV0s::CreateHistos(TFolder* folder) | |
62 | { | |
63 | // create the V0s monitor histograms | |
64 | ||
65 | fFolder = folder->AddFolder("V0s", "V0s"); | |
66 | ||
67 | fRadius = CreateHisto1("Radius", "radius of V0 vertices", | |
68 | 90, 0., 3., "r_{xy} [cm]", | |
69 | "#Delta N/N", AliMonitorHisto::kNormEvents); | |
70 | ||
71 | fMassK0 = CreateHisto1("MassK0", "invariant mass of K^{0} candidates", | |
72 | 50, 0.4, 0.6, "m_{#pi^{+}#pi^{-}} [GeV/c^{2}]", | |
73 | "#Delta N/N", AliMonitorHisto::kNormEvents); | |
74 | ||
75 | fMassLambda = CreateHisto1("MassLambda", | |
76 | "invariant mass of #Lambda candidates", | |
77 | 50, 1.0, 1.2, "m_{p#pi^{-}} [GeV/c^{2}]", | |
78 | "#Delta N/N", AliMonitorHisto::kNormEvents); | |
79 | ||
80 | fMassAntiLambda = CreateHisto1("MassAntiLambda", | |
81 | "invariant mass of #bar{#Lambda} candidates", | |
82 | 50, 1.0, 1.2, | |
83 | "m_{#bar{p}#pi^{+}} [GeV/c^{2}]", | |
84 | "#Delta N/N", AliMonitorHisto::kNormEvents); | |
85 | } | |
86 | ||
87 | ||
88 | //_____________________________________________________________________________ | |
89 | void AliMonitorV0s::FillHistos(AliRunLoader* runLoader, | |
90 | AliRawReader*) | |
91 | { | |
92 | // fill the TPC-ITS correlation monitor histogrms | |
93 | ||
94 | AliITSLoader* itsLoader = (AliITSLoader*) runLoader->GetLoader("ITSLoader"); | |
95 | if (!itsLoader) return; | |
96 | ||
97 | itsLoader->LoadV0s(); | |
98 | TTree* v0s = itsLoader->TreeV0(); | |
99 | if (!v0s) return; | |
100 | AliV0vertex* vertex = new AliV0vertex; | |
101 | v0s->SetBranchAddress("vertices", &vertex); | |
102 | ||
103 | for (Int_t i = 0; i < v0s->GetEntries(); i++) { | |
104 | v0s->GetEntry(i); | |
105 | Double_t x, y, z; | |
106 | vertex->GetXYZ(x, y, z); | |
107 | fRadius->Fill(TMath::Sqrt(x*x + y*y)); | |
108 | vertex->ChangeMassHypothesis(kK0Short); | |
109 | fMassK0->Fill(vertex->GetEffMass()); | |
110 | vertex->ChangeMassHypothesis(kLambda0); | |
111 | fMassLambda->Fill(vertex->GetEffMass()); | |
112 | vertex->ChangeMassHypothesis(kLambda0Bar); | |
113 | fMassAntiLambda->Fill(vertex->GetEffMass()); | |
114 | } | |
115 | ||
116 | delete vertex; | |
117 | itsLoader->UnloadV0s(); | |
118 | } |