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1 | #ifndef ALIGENHEPMCEVENTHEADER_H |
| 2 | #define ALIGENHEPMCEVENTHEADER_H |
| 3 | |
| 4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
| 5 | * See cxx source for full Copyright notice */ |
| 6 | |
| 7 | /* $Id$ */ |
| 8 | |
| 9 | #include "AliGenEventHeader.h" |
| 10 | |
| 11 | |
| 12 | class AliGenHepMCEventHeader : public AliGenEventHeader |
| 13 | { |
| 14 | public: |
| 15 | AliGenHepMCEventHeader(); |
| 16 | AliGenHepMCEventHeader(const char* name); |
| 17 | AliGenHepMCEventHeader( |
| 18 | Int_t Ncoll_hard, // Number of hard scatterings |
| 19 | Int_t Npart_proj, // Number of projectile participants |
| 20 | Int_t Npart_targ, // Number of target participants |
| 21 | Int_t Ncoll, // Number of NN (nucleon-nucleon) collisions |
| 22 | Int_t spectator_neutrons, // Number of spectator neutrons |
| 23 | Int_t spectator_protons, // Number of spectator protons |
| 24 | Int_t N_Nwounded_collisions, // Number of N-Nwounded collisions |
| 25 | Int_t Nwounded_N_collisions, // Number of Nwounded-N collisons |
| 26 | Int_t Nwounded_Nwounded_collisions, // Number of Nwounded-Nwounded collisions |
| 27 | Float_t impact_parameter, // Impact Parameter(in fm) of collision |
| 28 | Float_t event_plane_angle, // Azimuthal angle of event plane |
| 29 | Float_t eccentricity, // eccentricity of participating nucleons in the transverse plane (as in phobos nucl-ex/0510031) |
| 30 | Float_t sigma_inel_NN, // nucleon-nucleon inelastic (including diffractive) cross-section |
| 31 | Int_t id1, // flavour code of first parton |
| 32 | Int_t id2, // flavour code of second parton |
| 33 | Int_t pdf_id1, // LHAPDF set id of first parton |
| 34 | Int_t pdf_id2, // LHAPDF set id of second parton |
| 35 | Double_t x1, // fraction of beam momentum carried by first parton ("beam side") |
| 36 | Double_t x2, // fraction of beam momentum carried by second parton ("target side") |
| 37 | Double_t scalePDF, // Q-scale used in evaluation of PDF's (in GeV) |
| 38 | Double_t pdf1, // PDF (id1, x1, Q) - x*f(x) |
| 39 | Double_t pdf2 // PDF (id2, x2, Q) - x*f(x) |
| 40 | ); |
| 41 | virtual ~AliGenHepMCEventHeader() {} |
| 42 | |
| 43 | |
| 44 | Int_t Ncoll_hard() const {return fNcoll_hard;} // Number of hard scatterings |
| 45 | Int_t Npart_proj() const {return fNpart_proj;} // Number of projectile participants |
| 46 | Int_t Npart_targ() const {return fNpart_targ;} // Number of target participants |
| 47 | Int_t Ncoll() const {return fNcoll;} // Number of NN (nucleon-nucleon) collisions |
| 48 | Int_t spectator_neutrons() const {return fspectator_neutrons;} // Number of spectator neutrons |
| 49 | Int_t spectator_protons() const {return fspectator_protons;} // Number of spectator protons |
| 50 | Int_t N_Nwounded_collisions() const {return fN_Nwounded_collisions;} // Number of N-Nwounded collisions |
| 51 | Int_t Nwounded_N_collisions() const {return fNwounded_N_collisions;} // Number of Nwounded-N collisons |
| 52 | Int_t Nwounded_Nwounded_collisions() const {return fNwounded_Nwounded_collisions;} // Number of Nwounded-Nwounded collisions |
| 53 | Float_t impact_parameter() const {return fimpact_parameter;} // Impact Parameter(in fm) of collision |
| 54 | Float_t event_plane_angle() const {return fevent_plane_angle;} // Azimuthal angle of event plane |
| 55 | Float_t eccentricity() const {return feccentricity;} // eccentricity of participating nucleons in the transverse plane (as in phobos nucl-ex/0510031) |
| 56 | Float_t sigma_inel_NN() const {return fsigma_inel_NN;} // nucleon-nucleon inelastic (including diffractive) cross-section |
| 57 | |
| 58 | Int_t id1() const {return fid1;} // flavour code of first parton |
| 59 | Int_t id2() const {return fid2;} // flavour code of second parton |
| 60 | Int_t pdf_id1() const {return fpdf_id1;} // LHAPDF set id of first parton |
| 61 | Int_t pdf_id2() const {return fpdf_id2;} // LHAPDF set id of second parton |
| 62 | Double_t x1() const {return fx1;} // fraction of beam momentum carried by first parton ("beam side") |
| 63 | Double_t x2() const {return fx2;} // fraction of beam momentum carried by second parton ("target side") |
| 64 | Double_t scalePDF() const {return fscalePDF;} // Q-scale used in evaluation of PDF's (in GeV) |
| 65 | Double_t pdf1() const {return fpdf1;} // PDF (id1, x1, Q) - x*f(x) |
| 66 | Double_t pdf2() const {return fpdf2;} // PDF (id2, x2, Q) - x*f(x) |
| 67 | |
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68 | // convenience functions to check if the headers are containing information |
| 69 | Bool_t HeavyIonInfoValid(); |
| 70 | Bool_t PDFValid(); |
| 71 | |
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72 | protected: |
| 73 | |
| 74 | Int_t fNcoll_hard; // Number of hard scatterings |
| 75 | Int_t fNpart_proj; // Number of projectile participants |
| 76 | Int_t fNpart_targ; // Number of target participants |
| 77 | Int_t fNcoll; // Number of NN (nucleon-nucleon) collisions |
| 78 | Int_t fspectator_neutrons; // Number of spectator neutrons |
| 79 | Int_t fspectator_protons; // Number of spectator protons |
| 80 | Int_t fN_Nwounded_collisions; // Number of N-Nwounded collisions |
| 81 | Int_t fNwounded_N_collisions; // Number of Nwounded-N collisons |
| 82 | Int_t fNwounded_Nwounded_collisions; // Number of Nwounded-Nwounded collisions |
| 83 | Float_t fimpact_parameter; // Impact Parameter(in fm) of collision |
| 84 | Float_t fevent_plane_angle; // Azimuthal angle of event plane |
| 85 | Float_t feccentricity; // eccentricity of participating nucleons in the transverse plane (as in phobos nucl-ex/0510031) |
| 86 | Float_t fsigma_inel_NN; // nucleon-nucleon inelastic (including diffractive) cross-section |
| 87 | |
| 88 | Int_t fid1; // flavour code of first parton |
| 89 | Int_t fid2; // flavour code of second parton |
| 90 | Int_t fpdf_id1; // LHAPDF set id of first parton |
| 91 | Int_t fpdf_id2; // LHAPDF set id of second parton |
| 92 | Double_t fx1; // fraction of beam momentum carried by first parton ("beam side") |
| 93 | Double_t fx2; // fraction of beam momentum carried by second parton ("target side") |
| 94 | Double_t fscalePDF; // Q-scale used in evaluation of PDF's (in GeV) |
| 95 | Double_t fpdf1; // PDF (id1, x1, Q) - x*f(x) |
| 96 | Double_t fpdf2; // PDF (id2, x2, Q) - x*f(x) |
| 97 | |
| 98 | ClassDef(AliGenHepMCEventHeader, 2) // Event header for HepMC event |
| 99 | }; |
| 100 | |
| 101 | |
| 102 | |
| 103 | #endif |
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