#include <PartonicModel.h>

Inheritance diagram for chigen::PartonicModel:

Public Member Functions
	PartonicModel (double ecm, int pdgId, EvtId evtId, EvtSpinDensity spinDensity, double mesonMass)

virtual	~PartonicModel ()

virtual bool	next ()

virtual bool	setKin ()

virtual void	setSigma ()

	ClassDef (PartonicModel, 1)

Public Attributes
double	eCM

int	pdgId

EvtSpinDensity	spinDensity

EvtId	evtId

double	mesonMass

double	mesonMass2

double	x1

double	x2

double	sH

double	tH

double	uH

double	sigma

double	MaxSigma

double	MaxSigmaBackup

int	nCall

Detailed Description

Definition at line 15 of file PartonicModel.h.

Constructor & Destructor Documentation

chigen::PartonicModel::PartonicModel	(	double	ecm,
		int	pdgId,
		EvtId	evtId,
		EvtSpinDensity	spinDensity,
		double	mesonMass
	)

Definition at line 8 of file PartonicModel.cxx.

References eCM, chigen::ensure_chigen_is_initialized(), evt, evtId, m, mesonMass, mesonMass2, pdgId, and spinDensity.

                                        {
     chigen::ensure_chigen_is_initialized();
     eCM = ecm;
     pdgId = pdg;
     evtId = evt;
     spinDensity = spin;
     mesonMass = m;
     mesonMass2 = m*m;
 }

chigen::PartonicModel::~PartonicModel ( )

virtual

Definition at line 19 of file PartonicModel.cxx.

19 {

20 }

Member Function Documentation

chigen::PartonicModel::ClassDef	(	PartonicModel	,
		1
	)

bool chigen::PartonicModel::next ( )

virtual

Calculates the partonic cross section

Definition at line 22 of file PartonicModel.cxx.

References __chigen_cout__, i, chigen::random::random_engine, and sigma.

                                {
     nCall = 0;
     // trying 1000 attempts
     for (int i = 0; i < 1000; ++i) {
         ++nCall;
         if (!setKin()) {
             continue;
         };
         setSigma();
         if (sigma > MaxSigma) {
             //todo add proper info
             __chigen_cout__ <<
                     "sigma=" << std::setiosflags(ios::scientific) << sigma <<
                     " > MasSigma=" << std::setiosflags(ios::scientific) << MaxSigma <<
                     " Efct=" << sigma / MaxSigma << endl;
             MaxSigma = sigma;
             continue;
         };
         if (sigma / MaxSigma > chigen::random::random_engine->flat()) return true;
 
     }
     sigma = -1;
     return false;
 }

virtual bool chigen::PartonicModel::setKin ( )

inlinevirtual

fills kinematic variables

Reimplemented in chigen::models::ColorSingletPartonicModel.

Definition at line 29 of file PartonicModel.h.

                               {
             return false;
         };

virtual void chigen::PartonicModel::setSigma ( )

inlinevirtual

calculate f1*f2*dSigma/dT of the hard process for the selected kinematics

Reimplemented in chigen::models::ColorSingletPartonicModel.

Definition at line 36 of file PartonicModel.h.

36 {

37 };

Member Data Documentation

double chigen::PartonicModel::eCM

C.m. energy

Definition at line 44 of file PartonicModel.h.

Referenced by chigen::ChiGen::ChiGen(), chigen::models::ColorSingletPartonicModel::ColorSingletPartonicModel(), PartonicModel(), and chigen::PythiaChiGen::PythiaChiGen().

EvtId chigen::PartonicModel::evtId

EvtGen id

Definition at line 56 of file PartonicModel.h.

Referenced by PartonicModel().

double chigen::PartonicModel::MaxSigma

Maximal sigma

Definition at line 76 of file PartonicModel.h.

Referenced by chigen::models::ColorSingletPartonicModel::ColorSingletPartonicModel().

double chigen::PartonicModel::MaxSigmaBackup

Definition at line 76 of file PartonicModel.h.

Referenced by chigen::models::ColorSingletPartonicModel::ColorSingletPartonicModel().

double chigen::PartonicModel::mesonMass

Meson mass and its squared

Definition at line 60 of file PartonicModel.h.

Referenced by PartonicModel(), and chigen::PndChiGenExclusive::PndChiGenExclusive().

double chigen::PartonicModel::mesonMass2

Definition at line 60 of file PartonicModel.h.

Referenced by chigen::models::ColorSingletPartonicModel::ColorSingletPartonicModel(), and PartonicModel().

int chigen::PartonicModel::nCall

number of attempts

Definition at line 81 of file PartonicModel.h.

int chigen::PartonicModel::pdgId

Meson id

Definition at line 48 of file PartonicModel.h.

Referenced by PartonicModel().

double chigen::PartonicModel::sH

Mandelstam variables of the hard process

Definition at line 68 of file PartonicModel.h.

double chigen::PartonicModel::sigma

dsdt

Definition at line 72 of file PartonicModel.h.

EvtSpinDensity chigen::PartonicModel::spinDensity

Spin density corresponding to this polarization

Definition at line 52 of file PartonicModel.h.

Referenced by PartonicModel().

double chigen::PartonicModel::tH

Definition at line 68 of file PartonicModel.h.

double chigen::PartonicModel::uH

Definition at line 68 of file PartonicModel.h.

double chigen::PartonicModel::x1

Momentum fractions of the incoming partons

Definition at line 64 of file PartonicModel.h.

double chigen::PartonicModel::x2

Definition at line 64 of file PartonicModel.h.

The documentation for this class was generated from the following files:

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation