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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" | |
b6a3610d | 27 | #include "AliESD.h" |
7ba8900c | 28 | #include "AliLog.h" |
c4bd737c | 29 | #include <TFolder.h> |
04fa961a | 30 | #include <TPDGCode.h> |
31 | ||
32 | ||
33 | ClassImp(AliMonitorV0s) | |
34 | ||
35 | ||
36 | //_____________________________________________________________________________ | |
17c3cc9e | 37 | AliMonitorV0s::AliMonitorV0s(): |
38 | AliMonitor(), | |
39 | fRadius(NULL), | |
40 | fMassK0(NULL), | |
41 | fMassLambda(NULL), | |
42 | fMassAntiLambda(NULL) | |
04fa961a | 43 | { |
44 | // create a monitor object for V0s | |
45 | ||
46 | } | |
47 | ||
04fa961a | 48 | //_____________________________________________________________________________ |
49 | void AliMonitorV0s::CreateHistos(TFolder* folder) | |
50 | { | |
51 | // create the V0s monitor histograms | |
52 | ||
53 | fFolder = folder->AddFolder("V0s", "V0s"); | |
54 | ||
55 | fRadius = CreateHisto1("Radius", "radius of V0 vertices", | |
56 | 90, 0., 3., "r_{xy} [cm]", | |
57 | "#Delta N/N", AliMonitorHisto::kNormEvents); | |
58 | ||
59 | fMassK0 = CreateHisto1("MassK0", "invariant mass of K^{0} candidates", | |
60 | 50, 0.4, 0.6, "m_{#pi^{+}#pi^{-}} [GeV/c^{2}]", | |
61 | "#Delta N/N", AliMonitorHisto::kNormEvents); | |
62 | ||
63 | fMassLambda = CreateHisto1("MassLambda", | |
64 | "invariant mass of #Lambda candidates", | |
65 | 50, 1.0, 1.2, "m_{p#pi^{-}} [GeV/c^{2}]", | |
66 | "#Delta N/N", AliMonitorHisto::kNormEvents); | |
67 | ||
68 | fMassAntiLambda = CreateHisto1("MassAntiLambda", | |
69 | "invariant mass of #bar{#Lambda} candidates", | |
70 | 50, 1.0, 1.2, | |
71 | "m_{#bar{p}#pi^{+}} [GeV/c^{2}]", | |
72 | "#Delta N/N", AliMonitorHisto::kNormEvents); | |
73 | } | |
74 | ||
75 | ||
76 | //_____________________________________________________________________________ | |
b6a3610d | 77 | void AliMonitorV0s::FillHistos(AliRunLoader* /*runLoader*/, |
78 | AliRawReader*, AliESD* esd) | |
04fa961a | 79 | { |
b6a3610d | 80 | // fill the V0s monitor histogrms |
04fa961a | 81 | |
b6a3610d | 82 | for (Int_t i = 0; i < esd->GetNumberOfV0s(); i++) { |
83 | AliESDv0* v0 = esd->GetV0(i); | |
84 | if (!v0) continue; | |
04fa961a | 85 | Double_t x, y, z; |
b6a3610d | 86 | v0->GetXYZ(x, y, z); |
04fa961a | 87 | fRadius->Fill(TMath::Sqrt(x*x + y*y)); |
b6a3610d | 88 | v0->ChangeMassHypothesis(kK0Short); |
89 | fMassK0->Fill(v0->GetEffMass()); | |
90 | v0->ChangeMassHypothesis(kLambda0); | |
91 | fMassLambda->Fill(v0->GetEffMass()); | |
92 | v0->ChangeMassHypothesis(kLambda0Bar); | |
93 | fMassAntiLambda->Fill(v0->GetEffMass()); | |
04fa961a | 94 | } |
04fa961a | 95 | } |