1 #ifndef ALIDIELECTRONSIGNALMC_H
2 #define ALIDIELECTRONSIGNALMC_H
8 Ionut Cristian Arsene, iarsene@cern.ch
12 Monte Carlo signal definition:
13 Leg #1 <-- Mother #1 <-- Grandmother #1
15 Leg #2 <-- Mother #2 <-- Grandmother #2
17 For every leg, mother or grand-mother, a PDG code and a source can be specified.
19 1.) For the PDG codes, the PYTHIA standard is used.
20 A few non-existent PYTHIA codes are used to select more than one PYTHIA code. All these are described below
21 and implemented in AliDielectronMC::ComparePDG() function:
22 0 - default, accepts all PYTHIA codes
23 100 - light unflavoured mesons in the code range 100-199
25 300 - strange mesons in the code range 300-399
26 400 - charmed mesons in the code range 400-499
27 401 - open charm mesons (all D and D* mesons) 400-439
28 402 - open charm mesons and baryons together 400-439, 4000-4399
29 403 - all charm hadrons (mesons and baryons) 400-499, 4000-4999
30 500 - beauty mesons in the code range 500-599
31 501 - open beauty mesons 500-549
32 502 - open beauty mesons and baryons 500-549, 5000-5499
33 503 - all beauty hadrons 500-599, 5000-5999
34 1000 - light unflavoured baryons in the code range 1000-1999
35 2000 - --"-- 2000-2999
36 3000 - strange baryons in the code range 3000-3999
37 4000 - charmed baryons in the code range 4000-4999
38 4001 - open charm baryons 4000-4399
39 5000 - beauty baryons in the code range 5000-5999
40 5001 - open beauty baryons 5000-5499
42 2.) If the exclusion flags are turned ON then the PDG codes required and the conventional codes described above
43 are used to exclude the selected particles.
45 3.) If the selection of both charges is switched ON then the PDG codes act on both particles and anti-particles.
47 4.) Particles sources implemented:
48 1. Primary - particle originating in the physics event
49 2. FinalState- stable(final state) particles which reach the detector -> according to AliStack::IsPhysicalPrimary()
50 3. Direct - primary particle which has no mother (e.g. J/psi's added to pythia MC events via generator cocktails,
51 particles generated in a sudden freeze-out in thermal models, initial state particles)
52 4. Secondary - particle created during the GEANT propagation due to interaction of final state primaries with the material
54 5.) The 2 legs can originate from the same or different mother particles. This can be specified via the SetMotherRelation()
57 6.) The filling of the pure MC step can be switched on using SetFillPureMCStep() method call. This should be used
58 with care since at the pure MC information level there is no cut applied and for abundant particles the combinatorics
63 //__________________________________________________________________
64 class AliDielectronSignalMC : public TNamed {
67 enum EBranchRelation {kUndefined=0, kSame, kDifferent};
68 enum ESource {kDontCare=0, kPrimary, kFinalState, kDirect, kSecondary};
70 AliDielectronSignalMC();
71 AliDielectronSignalMC(const Char_t* name, const Char_t* title);
72 virtual ~AliDielectronSignalMC();
74 void SetLegPDGs(Int_t pdg1, Int_t pdg2, Bool_t exclude1=kFALSE, Bool_t exclude2=kFALSE)
75 {fLeg1 = pdg1; fLeg2 = pdg2; fLeg1Exclude=exclude1; fLeg2Exclude=exclude2;}
76 void SetMotherPDGs(Int_t pdg1, Int_t pdg2, Bool_t exclude1=kFALSE, Bool_t exclude2=kFALSE)
77 {fMother1 = pdg1; fMother2 = pdg2; fMother1Exclude=exclude1; fMother2Exclude=exclude2;}
78 void SetGrandMotherPDGs(Int_t pdg1, Int_t pdg2, Bool_t exclude1=kFALSE, Bool_t exclude2=kFALSE)
79 {fGrandMother1 = pdg1; fGrandMother2 = pdg2; fGrandMother1Exclude=exclude1; fGrandMother2Exclude=exclude2;}
80 void SetLegSources(ESource s1, ESource s2) {fLeg1Source = s1; fLeg2Source = s2;}
81 void SetMotherSources(ESource s1, ESource s2) {fMother1Source = s1; fMother2Source = s2;}
82 void SetGrandMotherSources(ESource s1, ESource s2) {fGrandMother1Source = s1; fGrandMother2Source = s2;}
83 void SetCheckBothChargesLegs(Bool_t flag1, Bool_t flag2) {fCheckBothChargesLeg1 = flag1; fCheckBothChargesLeg2 = flag2;}
84 void SetCheckBothChargesMothers(Bool_t flag1, Bool_t flag2) {fCheckBothChargesMother1 = flag1; fCheckBothChargesMother2 = flag2;}
85 void SetCheckBothChargesGrandMothers(Bool_t flag1, Bool_t flag2) {fCheckBothChargesGrandMother1 = flag1; fCheckBothChargesGrandMother2 = flag2;}
86 void SetMothersRelation(EBranchRelation relation) {fMothersRelation = relation;}
87 void SetFillPureMCStep(Bool_t fill=kTRUE) {fFillPureMCStep = fill;}
89 Int_t GetLegPDG(Int_t branch) const {return (branch==1 ? fLeg1 : fLeg2);}
90 Int_t GetMotherPDG(Int_t branch) const {return (branch==1 ? fMother1 : fMother2);}
91 Int_t GetGrandMotherPDG(Int_t branch) const {return (branch==1 ? fGrandMother1 : fGrandMother2);}
92 Bool_t GetLegPDGexclude(Int_t branch) const {return (branch==1 ? fLeg1Exclude : fLeg2Exclude);}
93 Bool_t GetMotherPDGexclude(Int_t branch) const {return (branch==1 ? fMother1Exclude : fMother2Exclude);}
94 Bool_t GetGrandMotherPDGexclude(Int_t branch) const {return (branch==1 ? fGrandMother1Exclude : fGrandMother2Exclude);}
95 ESource GetLegSource(Int_t branch) const {return (branch==1 ? fLeg1Source : fLeg2Source);}
96 ESource GetMotherSource(Int_t branch) const {return (branch==1 ? fMother1Source : fMother2Source);}
97 ESource GetGrandMotherSource(Int_t branch) const {return (branch==1 ? fGrandMother1Source : fGrandMother2Source);}
98 Bool_t GetCheckBothChargesLegs(Int_t branch) const {return (branch==1 ? fCheckBothChargesLeg1 : fCheckBothChargesLeg2);}
99 Bool_t GetCheckBothChargesMothers(Int_t branch) const {return (branch==1 ? fCheckBothChargesMother1 : fCheckBothChargesMother2);}
100 Bool_t GetCheckBothChargesGrandMothers(Int_t branch) const {return (branch==1 ? fCheckBothChargesGrandMother1 : fCheckBothChargesGrandMother2);}
101 EBranchRelation GetMothersRelation() const {return fMothersRelation;}
102 Bool_t GetFillPureMCStep() const {return fFillPureMCStep;}
105 // PDG codes for legs, mothers and grand-mothers
106 Int_t fLeg1; // leg 1 PDG
107 Int_t fLeg2; // leg 2 PDG
108 Int_t fMother1; // mother 1 PDG
109 Int_t fMother2; // mother 2 PDG
110 Int_t fGrandMother1; // grandmother 1 PDG
111 Int_t fGrandMother2; // grandmother 2 PDG
113 // Toggle on/off the use of the PDG codes as inclusion or exclusion
114 // Example: if fLeg1=211 and fLeg1Exclude=kTRUE than all codes will be accepted for leg 1 with
115 // the exception of 211 (pions)
116 Bool_t fLeg1Exclude; // leg 1
117 Bool_t fLeg2Exclude; // leg 2
118 Bool_t fMother1Exclude; // mother 1
119 Bool_t fMother2Exclude; // mother 2
120 Bool_t fGrandMother1Exclude; // grandmother 1
121 Bool_t fGrandMother2Exclude; // grandmother 2
124 ESource fLeg1Source; // leg 1 source
125 ESource fLeg2Source; // leg 2 source
126 ESource fMother1Source; // mother 1 source
127 ESource fMother2Source; // mother 2 source
128 ESource fGrandMother1Source; // grandmother 1 source
129 ESource fGrandMother2Source; // grandmother 2 source
131 // Flaggs whether to check both charges of a given PDG code
132 Bool_t fCheckBothChargesLeg1; // check both charges of the legs pdg
133 Bool_t fCheckBothChargesLeg2; // leg2
134 Bool_t fCheckBothChargesMother1; // mother 1
135 Bool_t fCheckBothChargesMother2; // mother 2
136 Bool_t fCheckBothChargesGrandMother1; // grand mother 1
137 Bool_t fCheckBothChargesGrandMother2; // grand mother 2
139 EBranchRelation fMothersRelation; // mother 1&2 relation (same, different or whatever)
141 Bool_t fFillPureMCStep; // check and fill the pure MC step
143 ClassDef(AliDielectronSignalMC,1);