DecayTreeItem Class Reference

#include <DecayTreeItem.h>

Inheritance diagram for DecayTreeItem:

Public Member Functions
	DecayTreeItem (int i=0)
	DecayTreeItem (const DecayTreeItem &other)
DecayTreeItem &	operator= (const DecayTreeItem &other)
virtual	~DecayTreeItem ()
	operator int ()
	operator int () const
int	parityFactor () const
int	L () const
char	L_as_SPD () const
void	setL (int l)
void	unSetL ()
void	setPDG (int id)
const ParticleProperties *	props () const
std::string	name () const
std::string	SVPAT () const
double	mass () const
bool	isNonResonant () const
double	width () const
std::string	charge () const
bool	hasDistinctAnti () const
int	pdg () const
std::string	J () const
bool	ChargeConThis ()
bool	antiThis ()
virtual void	print (std::ostream &out=std::cout) const
virtual void	printShort (std::ostream &out=std::cout) const
DecayTreeItem	operator- () const
DecayTreeItem	operator+ () const

Public Attributes
int	_pdg_id
int	_L_angMom

Private Member Functions
int	defaultParityFactor () const

Detailed Description

Definition at line 11 of file DecayTreeItem.h.

Constructor & Destructor Documentation

DecayTreeItem() [1/2]

DecayTreeItem::DecayTreeItem

(

int

i = 0

)

Definition at line 8 of file DecayTreeItem.cpp.

  : _pdg_id(i)
  , _L_angMom(-9999)
{
}

DecayTreeItem() [2/2]

DecayTreeItem::DecayTreeItem

(

const DecayTreeItem &

other

)

Definition at line 13 of file DecayTreeItem.cpp.

  : _pdg_id(other._pdg_id)
  , _L_angMom(other._L_angMom)
{}

~DecayTreeItem()

virtual DecayTreeItem::~DecayTreeItem ( )

inlinevirtual

Definition at line 51 of file DecayTreeItem.h.

{}

Member Function Documentation

antiThis()

bool DecayTreeItem::antiThis ( )

inline

Definition at line 78 of file DecayTreeItem.h.

{return ChargeConThis();}

charge()

std::string DecayTreeItem::charge

(

)

const

Definition at line 68 of file DecayTreeItem.cpp.

                                     {
  const ParticleProperties* pp = props();
  if(0 == pp){
    return "-9999";
  }
  return pp->charge();
}

ChargeConThis()

bool DecayTreeItem::ChargeConThis

(

)

Definition at line 95 of file DecayTreeItem.cpp.

                                 {
  if(! hasDistinctAnti()) return false;
  _pdg_id *= -1;
  return true;
}

defaultParityFactor()

int DecayTreeItem::defaultParityFactor ( ) const

inlineprivate

Definition at line 19 of file DecayTreeItem.h.

                                {
    // parity factor is the factor by which I multiply
    // 3-momenta before calculating spin factors.
    // The default is set such that if you have the
    // same amplitude model for D->f and Dbar->fbar
    // MINT conserves CP (and not just C by iteself, which
    // would be the case w/o this measure)
    // There is a public "parityFactor()" method below.
    // This can be modified in case I want to allow users in the future
    // to change this behaviour, for example by adding a variable
    // the modifies the parity factor. For now it's fixed and
    // parityFactor just returns the defaultParityFactor,
    // which is 1 for particles, -1 for antiparticles
    // and 1 for particles that are their own antiparticles.
    // It is the latter case where one might at some point
    // like to be able to change the behaviour, i.e.
    // when CP-conjugating a decay of a C eigenstate (but not
    // needed for a CP eigenstate, I'd think).
    //
    return (_pdg_id < 0 ? -1 : +1);
  }

hasDistinctAnti()

bool DecayTreeItem::hasDistinctAnti

(

)

const

Definition at line 75 of file DecayTreeItem.cpp.

                                         {
  const ParticleProperties* pp = props();
  if(0 == pp){
    return -1;
  }
  return pp->hasDistinctAnti();
}

isNonResonant()

bool DecayTreeItem::isNonResonant

(

)

const

Definition at line 54 of file DecayTreeItem.cpp.

                                       {
  const ParticleProperties* pp = props();
  if(0 == pp){
    return false;
  }
  return pp->isNonResonant();
}

J()

std::string DecayTreeItem::J

(

)

const

Definition at line 86 of file DecayTreeItem.cpp.

                                {
  const ParticleProperties* pp = props();
  if(0 == pp){
    return "";
  }
  return pp->J();
}

L()

int DecayTreeItem::L ( ) const

inline

Definition at line 59 of file DecayTreeItem.h.

{return _L_angMom;}

L_as_SPD()

char DecayTreeItem::L_as_SPD

(

)

const

Definition at line 104 of file DecayTreeItem.cpp.

                                 {
  if(L() < 0) return ' ';

  if(L()==0)      return 'S';
  else if(L()==1) return 'P';
  else if(L()==2) return 'D';
  else if(L()==3) return 'F';
  else if(L()==4) return 'G';
  else if(L()==5) return 'H';
  else if(L()==6) return 'I';
  else{
    // J's missing, next (L=7) is K, then alphabetical
    char Kplus='K';
    int advanceK = L()-7;
    for(int i=0; i < advanceK; i++) Kplus++;
    return Kplus;
  }
}

mass()

double DecayTreeItem::mass

(

)

const

Definition at line 47 of file DecayTreeItem.cpp.

                                {
  const ParticleProperties* pp = props();
  if(0 == pp){
    return -1;
  }
  return pp->mass();
}

name()

std::string DecayTreeItem::name

(

)

const

Definition at line 33 of file DecayTreeItem.cpp.

                                   {
  const ParticleProperties* pp = props();
  if(0 == pp){
    return "";
  }
  return pp->name();
}

operator int() [1/2]

DecayTreeItem::operator int ( )

inline

Definition at line 52 of file DecayTreeItem.h.

                {
    return _pdg_id;
  }

operator int() [2/2]

DecayTreeItem::operator int ( ) const

inline

Definition at line 55 of file DecayTreeItem.h.

                      {
    return _pdg_id;
  }

operator+()

DecayTreeItem DecayTreeItem::operator+

(

)

const

Definition at line 151 of file DecayTreeItem.cpp.

                                            {
  return *this;
}

operator-()

DecayTreeItem DecayTreeItem::operator-

(

)

const

Definition at line 146 of file DecayTreeItem.cpp.

                                            {
  DecayTreeItem dt(*this);
  dt.antiThis();
  return dt;
}

operator=()

DecayTreeItem & DecayTreeItem::operator=

(

const DecayTreeItem &

other

)

Definition at line 17 of file DecayTreeItem.cpp.

                                                                 {
  _pdg_id    = other._pdg_id;
  _L_angMom  = other._L_angMom;
  return *this;
}

parityFactor()

int DecayTreeItem::parityFactor ( ) const

inline

Definition at line 58 of file DecayTreeItem.h.

{return defaultParityFactor();} // see above

pdg()

int DecayTreeItem::pdg

(

)

const

Definition at line 82 of file DecayTreeItem.cpp.

                            {
  return _pdg_id;
}

print()

void DecayTreeItem::print ( std::ostream &  out = std::cout ) const

virtual

Reimplemented in AssociatedDecayTreeItem.

Definition at line 123 of file DecayTreeItem.cpp.

                                              {
  const ParticleProperties* pp = props();
  if(0 == pp){
    out << _pdg_id;
  }else{
    out << pp->name() 
    << "(" << pp->SVPAT() <<")";
  }
  if(L() > -9998){
    out << L_as_SPD() << "-wave";
  }
}

printShort()

void DecayTreeItem::printShort ( std::ostream &  out = std::cout ) const

virtual

Definition at line 135 of file DecayTreeItem.cpp.

                                                   {
  const ParticleProperties* pp = props();
  if(0 == pp){
    out << _pdg_id;
  }else{
    out << pp->name();
  }
  if(L() > -9998){
    out << "[" << L_as_SPD() << "]";
  }
}

props()

const ParticleProperties * DecayTreeItem::props

(

)

const

Definition at line 23 of file DecayTreeItem.cpp.

                                                    {
  const ParticlePropertiesList* ppl = ParticlePropertiesList::getMe();
  if(0 == ppl){
    std::cout << "Error in DecayTreeItem::props(): "
          << "can't find ParticlePropertiesList."
          << std::endl;
    return 0;
  }
  return ppl->get(_pdg_id);
}

setL()

void DecayTreeItem::setL ( int  l )

inline

Definition at line 61 of file DecayTreeItem.h.

{ _L_angMom = l;}

setPDG()

void DecayTreeItem::setPDG

(

int

id

)

Definition at line 101 of file DecayTreeItem.cpp.

                                {
  _pdg_id = id;
}

SVPAT()

std::string DecayTreeItem::SVPAT

(

)

const

Definition at line 40 of file DecayTreeItem.cpp.

                                    {
  const ParticleProperties* pp = props();
  if(0 == pp){
    return "?";
  }
  return pp->SVPAT();
}

unSetL()

void DecayTreeItem::unSetL ( )

inline

Definition at line 62 of file DecayTreeItem.h.

{ _L_angMom = -9999;}

width()

double DecayTreeItem::width

(

)

const

Definition at line 61 of file DecayTreeItem.cpp.

                                 {
  const ParticleProperties* pp = props();
  if(0 == pp){
    return -1;
  }
  return pp->width();
}

Member Data Documentation

_L_angMom

int DecayTreeItem::_L_angMom

Definition at line 42 of file DecayTreeItem.h.

_pdg_id

int DecayTreeItem::_pdg_id

Definition at line 41 of file DecayTreeItem.h.

---

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

• Mint/DecayTreeItem.h
• src/Mojito/DecayTrees/DecayTreeItem.cpp