simcore::lhe::LHEParticle Class Reference

Single particle record in an LHE event. More...

#include <LHEParticle.h>

Public Member Functions
	LHEParticle (std::string &data)
	Class constructor.
int	getPdgId () const
	Get the PDG code (IDUP).
int	getStatus () const
	Get the status code (ISTUP).
int	getMother (int) const
	Get a mother particle index (MOTHUP) by index_.
int	getColor (int) const
	Get the particle color (ICOLUP) by index_.
double	getMomentum (int) const
	Get a momentum component (PUP) by index_.
double	getLifetime () const
	Get the proper lifetime (VTIMUP).
double	getSpin () const
	Get the particle's spin (SPINUP).
void	setMother (int i, LHEParticle *particle)
	Set a mother particle by index_.
LHEParticle *	getMotherParticle (int) const
	Get a mother particle by index_.
void	print () const
	Print particle information to an output stream.

Private Attributes
LHEParticle *	mothers_ [2]
	The mother particles.
int	pdg_id_
	The PDG code.
int	status_
	The status code.
int	mother_ [2]
	The mother particle indices.
int	color_ [2]
	The particle color.
double	momentum_ [5]
	The momentum components.
double	lifetime_
	The proper time.
int	spin_
	The particle's spin.

Friends
std::ostream &	operator<< (std::ostream &stream, const LHEParticle &particle)
	Overloaded stream operator.

Detailed Description

Single particle record in an LHE event.

Definition at line 28 of file LHEParticle.h.

Constructor & Destructor Documentation

LHEParticle()

simcore::lhe::LHEParticle::LHEParticle

(

std::string &

data

)

Class constructor.

Parameters

data	The particle record as a space-delimited string.

Definition at line 11 of file LHEParticle.cxx.

                                        {
  std::istringstream iss(line);
  std::vector<std::string> tokens;
  do {
    std::string elem;
    iss >> elem;
    if (elem.size() != 0) {
      tokens.push_back(elem);
    }
  } while (iss);
 
  if (tokens.size() != 13) {
    EXCEPTION_RAISE("TokenNum",
                    "Wrong number of tokens in LHE particle record.");
  }
 
  pdg_id_ = atof(tokens[0].c_str());
  status_ = atoi(tokens[1].c_str());
  mother_[0] = atoi(tokens[2].c_str());
  mother_[1] = atoi(tokens[3].c_str());
  color_[0] = atoi(tokens[4].c_str());
  color_[1] = atoi(tokens[5].c_str());
  momentum_[0] = atof(tokens[6].c_str());
  momentum_[1] = atof(tokens[7].c_str());
  momentum_[2] = atof(tokens[8].c_str());
  momentum_[3] = atof(tokens[9].c_str());
  momentum_[4] = atof(tokens[10].c_str());
  lifetime_ = atof(tokens[11].c_str());
  spin_ = atof(tokens[12].c_str());
 
  mothers_[0] = nullptr;
  mothers_[1] = nullptr;
}

References color_, lifetime_, momentum_, mother_, mothers_, pdg_id_, spin_, and status_.

Member Function Documentation

getColor()

int simcore::lhe::LHEParticle::getColor

(

int

i

)

const

Get the particle color (ICOLUP) by index_.

Returns

The particle color by index_.

Definition at line 51 of file LHEParticle.cxx.

{ return color_[i]; }

References color_.

Referenced by print().

getLifetime()

double simcore::lhe::LHEParticle::getLifetime

(

)

const

Get the proper lifetime (VTIMUP).

Returns

The particle's proper lifetime.

Definition at line 55 of file LHEParticle.cxx.

{ return lifetime_; }

References lifetime_.

Referenced by print().

getMomentum()

double simcore::lhe::LHEParticle::getMomentum

(

int

i

)

const

Get a momentum component (PUP) by index_.

Defined in order: E/C, Px, Py, Pz, mass

Returns

The momentum component by index_.

Definition at line 53 of file LHEParticle.cxx.

{ return momentum_[i]; }

References momentum_.

Referenced by print().

getMother()

int simcore::lhe::LHEParticle::getMother

(

int

i

)

const

Get a mother particle index (MOTHUP) by index_.

Returns

The mother particle by index_.

Definition at line 49 of file LHEParticle.cxx.

{ return mother_[i]; }

References mother_.

Referenced by print().

getMotherParticle()

LHEParticle * simcore::lhe::LHEParticle::getMotherParticle

(

int

i

)

const

Get a mother particle by index_.

Returns

The mother particle at the index_.

Definition at line 63 of file LHEParticle.cxx.

{ return mothers_[i]; }

References mothers_.

getPdgId()

int simcore::lhe::LHEParticle::getPdgId

(

)

const

Get the PDG code (IDUP).

Returns

The PDG code.

Definition at line 45 of file LHEParticle.cxx.

{ return pdg_id_; }

References pdg_id_.

Referenced by print().

getSpin()

double simcore::lhe::LHEParticle::getSpin

(

)

const

Get the particle's spin (SPINUP).

Returns

The particle's spin.

Definition at line 57 of file LHEParticle.cxx.

{ return spin_; }

References spin_.

Referenced by print().

getStatus()

int simcore::lhe::LHEParticle::getStatus

(

)

const

Get the status code (ISTUP).

Returns

The status code.

Definition at line 47 of file LHEParticle.cxx.

{ return status_; }

References status_.

Referenced by print().

print()

void simcore::lhe::LHEParticle::print

(

)

const

Print particle information to an output stream.

Definition at line 65 of file LHEParticle.cxx.

                              {
  std::cout << "LHEParticle { " << "PDG ID: " << getPdgId()
            << ", Status: " << getStatus() << ", Mother[0]: " << getMother(0)
            << ", Mother[1]: " << getMother(1) << ", Color[0]: " << getColor(0)
            << ", Color[1]: " << getColor(1)
            << ", Momentum[0]: " << getMomentum(0)
            << ", Momentum[1]: " << getMomentum(1)
            << ", Momentum[2]: " << getMomentum(2)
            << ", Momentum[3]: " << getMomentum(3)
            << ", Momentum[4]: " << getMomentum(4)
            << ", Time: " << getLifetime() << ", Spin: " << getSpin() << " }"
            << std::endl;
}

References getColor(), getLifetime(), getMomentum(), getMother(), getPdgId(), getSpin(), and getStatus().

setMother()

void simcore::lhe::LHEParticle::setMother	(	int	i,
		LHEParticle *	particle )

Set a mother particle by index_.

Parameters

i	The mother index_.
particle	The mother particle.

Definition at line 59 of file LHEParticle.cxx.

                                                      {
  mothers_[i] = mother;
}

References mothers_.

Friends And Related Symbol Documentation

operator<<

std::ostream & operator<< ( std::ostream & stream, const LHEParticle & particle )

friend

Overloaded stream operator.

Parameters

stream	The output stream.
particle	The particle to print.

Member Data Documentation

color_

int simcore::lhe::LHEParticle::color_[2]

private

The particle color.

Definition at line 129 of file LHEParticle.h.

Referenced by getColor(), and LHEParticle().

lifetime_

double simcore::lhe::LHEParticle::lifetime_

private

The proper time.

Definition at line 139 of file LHEParticle.h.

Referenced by getLifetime(), and LHEParticle().

momentum_

double simcore::lhe::LHEParticle::momentum_[5]

private

The momentum components.

Definition at line 134 of file LHEParticle.h.

Referenced by getMomentum(), and LHEParticle().

mother_

int simcore::lhe::LHEParticle::mother_[2]

private

The mother particle indices.

Definition at line 124 of file LHEParticle.h.

Referenced by getMother(), and LHEParticle().

mothers_

LHEParticle* simcore::lhe::LHEParticle::mothers_[2]

private

The mother particles.

Definition at line 109 of file LHEParticle.h.

Referenced by getMotherParticle(), LHEParticle(), and setMother().

pdg_id_

int simcore::lhe::LHEParticle::pdg_id_

private

The PDG code.

Definition at line 114 of file LHEParticle.h.

Referenced by getPdgId(), and LHEParticle().

spin_

int simcore::lhe::LHEParticle::spin_

private

The particle's spin.

Definition at line 144 of file LHEParticle.h.

Referenced by getSpin(), and LHEParticle().

status_

int simcore::lhe::LHEParticle::status_

private

The status code.

Definition at line 119 of file LHEParticle.h.

Referenced by getStatus(), and LHEParticle().

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

• SimCore/include/SimCore/LHE/LHEParticle.h
• SimCore/src/SimCore/LHE/LHEParticle.cxx