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1 | #ifndef ALIGENPAIRFLAT_H |
| 2 | #define ALIGENPAIRFLAT_H |
| 3 | |
| 4 | |
| 5 | // Generator for particle pairs in a preset |
| 6 | // kinematic range |
| 7 | // ranges can be set for invariant mass, pair pT, pair rapidity |
| 8 | // and pair azimuth |
| 9 | |
| 10 | // Comments and suggestions: markus.konrad.kohler@cern.ch |
| 11 | |
| 12 | |
| 13 | #include "AliGenerator.h" |
| 14 | |
| 15 | class TF1; |
| 16 | |
| 17 | class AliGenPairFlat : public AliGenerator |
| 18 | { |
| 19 | public: |
| 20 | AliGenPairFlat(); |
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21 | virtual ~AliGenPairFlat(); |
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22 | virtual void Generate(); |
| 23 | virtual void Init(); |
| 24 | |
| 25 | virtual void SetPairNPart(Int_t npart) {fPairNpart=npart;} |
| 26 | virtual void SetPairYRange(Float_t Ymin, Float_t Ymax) |
| 27 | {fPairYMin = Ymin; fPairYMax = Ymax;} |
| 28 | virtual void SetPairPhiRange(Float_t phimin, Float_t phimax) |
| 29 | {fPairPhiMin = phimin; fPairPhiMax = phimax;} |
| 30 | virtual void SetPairPtRange(Float_t ptmin, Float_t ptmax) |
| 31 | {fPairPtMin = ptmin; fPairPtMax = ptmax;} |
| 32 | virtual void SetPairMassRange(Float_t massmin, Float_t massmax) |
| 33 | {fPairMassMin = massmin; fPairMassMax = massmax;} |
| 34 | virtual void SetLegPdg(Int_t pdg1, Int_t pdg2) |
| 35 | {fLegPdg1 = pdg1; fLegPdg2 = pdg2;} |
| 36 | virtual void SetPolarization(Float_t Alpha) |
| 37 | {fAlpha = Alpha;} |
| 38 | void SetDebug(Int_t debug) {fDebug=debug;} |
| 39 | |
| 40 | protected: |
| 41 | |
| 42 | Int_t fPairNpart; //Number of generated pairs |
| 43 | Float_t fPairYMin; // Minimum eta |
| 44 | Float_t fPairYMax; // Maximum eta |
| 45 | Float_t fPairPhiMin; // Minimum phi |
| 46 | Float_t fPairPhiMax; // Maximum phi |
| 47 | Float_t fPairPtMin; // Minimum pt |
| 48 | Float_t fPairPtMax; // Maximum pt |
| 49 | Float_t fPairMassMin; // Minimum mass |
| 50 | Float_t fPairMassMax; // Maximum mass |
| 51 | Int_t fLegPdg1; // pdg code of first daughter |
| 52 | Int_t fLegPdg2; // pdg code of second daughter |
| 53 | Float_t fAlpha; // Polarization factor |
| 54 | Int_t fDebug; // debug level |
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55 | TF1 *fPol; // Polarization function |
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56 | |
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57 | Bool_t Decay(const TLorentzVector& mother, TLorentzVector &dau1, TLorentzVector &dau2 , TF1* fPol); |
| 58 | |
| 59 | |
| 60 | private: |
| 61 | AliGenPairFlat(const AliGenPairFlat &pair); |
| 62 | AliGenPairFlat & operator=(const AliGenPairFlat & pair); |
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63 | |
| 64 | ClassDef(AliGenPairFlat,1) // Flat random pair generator |
| 65 | }; |
| 66 | |
| 67 | #endif |
git://git.uio.no / u / mrichter / AliRoot.git / blame