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7356f978 | 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 | //////////////////////////////////////////////////////////////////////////////// | |
06351446 | 17 | // |
7356f978 | 18 | // This class is a simple set of definitions which are used to define a |
19 | // decay tree to be studied for a resonance, in terms of the PID and charge | |
20 | // of its candidate daughters, which in turn determins what kind of objects | |
21 | // the analysis must take into account. | |
22 | // This object contains two AliRsnDaughterDef which define a model for each | |
23 | // of the two expected daughters (see also AliRsnDaughterDef class) plus a | |
24 | // mass hypothesis for the resonance, which is used for computin quantities | |
25 | // which need it (like rapidity or Mt), and a PDG code, which is used to | |
26 | // check for true pairs, when needed. In all other cases, these two additional | |
27 | // values can be left to their default (meaningless) value. | |
28 | // Since this object must define a decay channel, the only provided constructor | |
29 | // allow to set a PID and a charge. | |
06351446 | 30 | // |
7356f978 | 31 | // authors: A. Pulvirenti (alberto.pulvirenti@ct.infn.it) |
32 | // M. Vala (martin.vala@cern.ch) | |
06351446 | 33 | // |
7356f978 | 34 | //////////////////////////////////////////////////////////////////////////////// |
06351446 | 35 | |
06351446 | 36 | #include "AliLog.h" |
11ed73f6 | 37 | #include "AliRsnMother.h" |
06351446 | 38 | #include "AliRsnPairDef.h" |
39 | ||
40 | ClassImp(AliRsnPairDef) | |
41 | ||
42 | //_____________________________________________________________________________ | |
11ed73f6 | 43 | AliRsnPairDef::AliRsnPairDef() : fMotherMass(0.0), fMotherPDG(0), fDef1(), fDef2() |
06351446 | 44 | { |
45 | // | |
46 | // Empty constructor. | |
47 | // Initializes the data members to default values: | |
48 | // - no definition of particles in the pair; | |
49 | // - histogram binning undefined. | |
50 | // When using this constructor, all analysis elements (particles, histogram) | |
51 | // must be defined before starting event processing. | |
52 | // | |
06351446 | 53 | } |
54 | ||
aec0ec32 | 55 | //_____________________________________________________________________________ |
56 | AliRsnPairDef::AliRsnPairDef | |
7356f978 | 57 | (EPARTYPE type1, Char_t sign1, EPARTYPE type2, Char_t sign2, Int_t motherPDG, Double_t motherMass) : |
58 | fMotherMass(motherMass), | |
59 | fMotherPDG(motherPDG), | |
60 | fDef1(AliRsnDaughter::FromAliPID(type1), sign1), | |
61 | fDef2(AliRsnDaughter::FromAliPID(type2), sign2) | |
62 | { | |
63 | // | |
64 | // Constructor with arguments. | |
65 | // This constructor allows to define all the working parameters. | |
66 | // | |
67 | } | |
68 | ||
69 | //_____________________________________________________________________________ | |
70 | AliRsnPairDef::AliRsnPairDef | |
71 | (AliRsnDaughter::ESpecies type1, Char_t sign1, AliRsnDaughter::ESpecies type2, Char_t sign2, Int_t motherPDG, Double_t motherMass) : | |
2a1c7696 | 72 | fMotherMass(motherMass), |
11ed73f6 | 73 | fMotherPDG(motherPDG), |
74 | fDef1(type1, sign1), | |
75 | fDef2(type2, sign2) | |
aec0ec32 | 76 | { |
77 | // | |
78 | // Constructor with arguments. | |
79 | // This constructor allows to define all the working parameters. | |
80 | // | |
aec0ec32 | 81 | } |
82 | ||
06351446 | 83 | //_____________________________________________________________________________ |
84 | AliRsnPairDef::AliRsnPairDef(const AliRsnPairDef ©) : | |
2a1c7696 | 85 | TObject(copy), |
86 | fMotherMass(copy.fMotherMass), | |
11ed73f6 | 87 | fMotherPDG(copy.fMotherPDG), |
88 | fDef1(copy.fDef1), | |
89 | fDef2(copy.fDef2) | |
06351446 | 90 | { |
91 | // | |
92 | // Copy constructor with standard behavior | |
93 | // | |
06351446 | 94 | } |
95 | ||
96 | //_____________________________________________________________________________ | |
97 | const AliRsnPairDef& AliRsnPairDef::operator=(const AliRsnPairDef ©) | |
98 | { | |
99 | // | |
100 | // Assignment operator with standard behavior. | |
101 | // | |
102 | ||
2a1c7696 | 103 | fMotherMass = copy.fMotherMass; |
104 | fMotherPDG = copy.fMotherPDG; | |
11ed73f6 | 105 | fDef1 = copy.fDef1; |
106 | fDef2 = copy.fDef2; | |
06351446 | 107 | |
2a1c7696 | 108 | return (*this); |
06351446 | 109 | } |
110 | ||
aec0ec32 | 111 | //_____________________________________________________________________________ |
2dab9030 | 112 | const char* AliRsnPairDef::GetPairName() const |
aec0ec32 | 113 | { |
114 | // | |
115 | // Returns a compact string with the name of the pair, | |
116 | // to be used for naming objects related to it. | |
117 | // | |
e0baff8c | 118 | |
11ed73f6 | 119 | return Form("%s%s", fDef1.GetName(), fDef2.GetName()); |
aec0ec32 | 120 | } |