git://git.uio.no / u / mrichter / AliRoot.git / blame
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1 | /////////////////////////////////////////////////////////////////////////// |
| 2 | // | |
| 3 | // Copyright 2010 | |
| 4 | // | |
| 5 | // This file is part of starlight. | |
| 6 | // | |
| 7 | // starlight is free software: you can redistribute it and/or modify | |
| 8 | // it under the terms of the GNU General Public License as published by | |
| 9 | // the Free Software Foundation, either version 3 of the License, or | |
| 10 | // (at your option) any later version. | |
| 11 | // | |
| 12 | // starlight is distributed in the hope that it will be useful, | |
| 13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | // GNU General Public License for more details. | |
| 16 | // | |
| 17 | // You should have received a copy of the GNU General Public License | |
| 18 | // along with starlight. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | // | |
| 20 | /////////////////////////////////////////////////////////////////////////// | |
| 21 | // | |
| 22 | // File and Version Information: | |
| 23 | // $Rev:: $: revision of last commit | |
| 24 | // $Author:: $: author of last commit | |
| 25 | // $Date:: $: date of last commit | |
| 26 | // | |
| 27 | // Description: | |
| 28 | // | |
| 29 | // | |
| 30 | // | |
| 31 | /////////////////////////////////////////////////////////////////////////// | |
| 32 | ||
| 33 | ||
| 34 | #ifndef GAMMAGAMMASINGLE_H | |
| 35 | #define GAMMAGAMMASINGLE_H | |
| 36 | ||
| 37 | ||
| 38 | #include <vector> | |
| 39 | ||
| 40 | #include "starlightconstants.h" | |
| 41 | #include "readinluminosity.h" | |
| 42 | #include "beambeamsystem.h" | |
| 43 | #include "randomgenerator.h" | |
| 44 | #include "eventchannel.h" | |
| 45 | #include "starlightconfig.h" | |
| 46 | #ifdef ENABLE_PYTHIA | |
| 47 | #include "pythiadecayer.h" | |
| 48 | #endif | |
| 49 | ||
| 50 | class Gammagammasingle : public eventChannel | |
| 51 | { | |
| 52 | public: | |
| 53 | Gammagammasingle(beamBeamSystem& bbsystem); | |
| 54 | ~Gammagammasingle(); | |
| 55 | ||
| 56 | void singleCrossSection(); | |
| 57 | starlightConstants::event produceEvent(int &ievent); | |
| 58 | ||
| 59 | upcEvent produceEvent(); | |
| 60 | ||
| 61 | private: | |
| 62 | double _sigmax[starlightLimits::MAXWBINS][starlightLimits::MAXYBINS];//=new double[500][500]; //decreased from 1000*1000; too big! causes fault! | |
| 63 | double _sigmaSum; | |
| 64 | double _wdelta; //Added 7/26/07 for passing sigmadelta to pickw | |
| 65 | double _remainwd;// " | |
| 66 | int _ivalwd; // " | |
| 67 | ||
| 68 | void pickw(double &w); | |
| 69 | void picky(double &y); | |
| 70 | ||
| 71 | void parentMomentum(double w,double y,double &E,double &px,double &py,double&pz); | |
| 72 | double pp(double E); | |
| 73 | void twoBodyDecay(starlightConstants::particleTypeEnum &ipid,double E,double W,double px0,double py0,double pz0,double &px1,double &py1,double&pz1,double &px2,double &py2,/*double &py2,*/double &pz2,int &iFbadevent); | |
| 74 | // void transform(double betax,double betay,double betaz,double &E,double &px,double &py,double &pz,int &iFbadevent); | |
| 75 | void thephi(double W,double px,double py,double pz,double E,double &theta,double &phi); | |
| 76 | ||
| 77 | double getMass(); | |
| 78 | double getWidth(); | |
| 79 | double getSpin(); | |
| 80 | ||
| 81 | starlightConstants::particleTypeEnum _GGsingInputpidtest; | |
| 82 | int _GGsingInputnumw; | |
| 83 | int _GGsingInputnumy; | |
| 84 | double _GGsingInputGamma_em; | |
| 85 | #ifdef ENABLE_PYTHIA | |
| 86 | pythiaDecayer _pyDecayer; | |
| 87 | #endif | |
| 88 | ||
| 89 | }; | |
| 90 | ||
| 91 | ||
| 92 | #endif // GAMMAGAMMASINGLE_H |