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1/**
2 * @file AliForwardMultiplicityDistribution.h
3 * @author Christian Holm Christensen <cholm@master.hehi.nbi.dk>
4 * @date Thu Feb 7 01:02:42 2013
5 *
6 * @brief
7 *
8 *
9 * @ingroup pwglf_forward_multdist
10 */
11#ifndef ALIFORWARDMULTIPLICITYDISTRIBUTION_H
12#define ALIFORWARDMULTIPLICITYDISTRIBUTION_H
13#include "AliBaseAODTask.h"
14
15class TH2D;
16
17/**
18 * Task to do the multiplicity distibution
19 *
20 * @ingroup pwglf_forward Tasks
21 * @ingroup pwglf_forward_multdist
22 * @todo Should not inherit from AliBasedNdetaTask
23 */
24class AliForwardMultiplicityDistribution : public AliBaseAODTask
25{
26public:
27 /**
28 * Default Constructor
29 */
30 AliForwardMultiplicityDistribution();
31 /**
32 * Constructor
33 */
34 AliForwardMultiplicityDistribution(const char* name);
35 /**
36 * Destructor
37 */
38 virtual ~AliForwardMultiplicityDistribution(){}
39 /**
40 * Embedded Class begins here
41 */
42 struct Bin : public TNamed
43 {
44 /**
45 * Default Constructor
46 */
47 Bin();
48 /**
49 * Constructor
50 */
51 Bin(Double_t etaLow, Double_t etaHigh);
52 /**
53 * Copy Constructor
54 */
55 Bin(const Bin&){;}
56 /**
57 * Assignment operator
58 */
59 Bin& operator=(const Bin&){return*this;}
60 /**
61 * Destructor
62 */
63 ~Bin(){}
64 /**
65 * Define outputs of a single eta bin
66 */
67 virtual void CreateOutputObjectss(TList* cont, Int_t max);
68 /**
69 * Process a single eta bin
70 */
71 virtual void Process(TH1D* dndetaForward, TH1D* dndetaCentral, TH1D* normForward, TH1D* normCentral, Double_t VtxZ);
72 Double_t fEtaLow; // low eta limit
73 Double_t fEtaHigh; // high eta limit
74 TH1D* fHist; // multiplicity distribution hist
75 TH1D* fHistPlus05; // mult. dist. hist scaled up with 5%
76 TH1D* fHistPlus075; // mult. dist. hist scaled up with 7.5%
77 TH1D* fHistPlus10; // mult. dist. hist scaled up with 10%
78 TH1D* fHistMinus05; // mult. dist. hist scaled down with 5%
79 TH1D* fHistMinus075; // mult. dist. hist scaled down with 7.5%
80 TH1D* fHistMinus10; // mult. dist. hist scaled down with 10%
81 TH1D* fHistPlusSys; // mult. dist. hist scaled up with the event uncertainty
82 TH1D* fHistMinusSys; // mult. dist, hist scaled down with the event uncertainty
83 TH2D* fAcceptance; // histogram showing the 'holes' in acceptance.
84 // BinContent of 1 shows a hole, and BinContent of 10 shows data coverage
85 TH2D* fVtxZvsNdataBins; // VtxZ vs. number of data acceptance bins (normalised to the eta range)
86
87 ClassDef(Bin,3); // Manager of data
88 };
89 /**
90 * Create Output Objects
91 */
92 virtual Bool_t Book();
93 /**
94 * User Exec
95 */
96 Bool_t Event(AliAODEvent& aod);
97 /**
98 * Terminate
99 */
100 Bool_t Finalize() { return true; }
101 /**
102 * Set Centrality
103 */
104 void SetCentrality(Int_t low, Int_t high) { SetCentralityAxis(low, high); }
105 /**
106 * Set fNBins, multiplicity histos run from 0 to fNBins
107 */
108 void SetNBins(Int_t n){fNBins= n;}
109 /**
110 * Add another eta bin to the task
111 */
112 void AddBin(Double_t etaLow, Double_t etaHigh){fBins.Add(new Bin(etaLow, etaHigh)); }
113 /**
114 * Form name of eta bin
115 */
116 static const Char_t* FormBinName(Double_t etaLow, Double_t etaHigh);
117protected:
118 /**
119 * Copy Constructor
120 */
121 AliForwardMultiplicityDistribution(const AliForwardMultiplicityDistribution&);
122 /**
123 * Assignment Operator
124 */
125 AliForwardMultiplicityDistribution&
126 operator=(const AliForwardMultiplicityDistribution&);
127
128 TList fBins; // eta bin list
129 Int_t fNBins; // multiplicity axis' runs from 0 to fNbins
130 ClassDef(AliForwardMultiplicityDistribution, 3);
131};
132
133#endif
134// Local Variables:
135// mode: C++
136// End: