SymmLorentzMatrix Class Reference

#include <SymmLorentzMatrix.h>

Inheritance diagram for SymmLorentzMatrix:

Public Member Functions
	SymmLorentzMatrix ()
	SymmLorentzMatrix (const TLorentzVector p[4])
	SymmLorentzMatrix (const TLorentzVector p)
	SymmLorentzMatrix (const SymmLorentzMatrix &other)
SymmLorentzMatrix &	add (const SymmLorentzMatrix &other)
SymmLorentzMatrix &	subtract (const SymmLorentzMatrix &other)
SymmLorentzMatrix &	mult (double s)
SymmLorentzMatrix &	div (double s)
TLorentzVector	Contract (const TLorentzVector &vec)
LorentzMatrix	Contract_1 (const SymmLorentzMatrix &M)
double	Contract_2 (const SymmLorentzMatrix &M)
SymmLorentzMatrix &	operator+= (const SymmLorentzMatrix &rhs)
SymmLorentzMatrix &	operator *= (double rhs)
SymmLorentzMatrix &	operator-= (const SymmLorentzMatrix &rhs)
SymmLorentzMatrix &	operator/= (double rhs)
SymmLorentzMatrix &	operator= (const SymmLorentzMatrix &other)
SymmLorentzMatrix	operator+ (const SymmLorentzMatrix &rhs) const
SymmLorentzMatrix	operator- (const SymmLorentzMatrix &rhs) const
SymmLorentzMatrix	operator * (double rhs) const
SymmLorentzMatrix	operator/ (double rhs) const
Public Member Functions inherited from LorentzMatrix
const TLorentzVector &	v (int i) const
	LorentzMatrix ()
	LorentzMatrix (const TLorentzVector p[4])
	LorentzMatrix (const LorentzMatrix &other)
const TLorentzVector &	X () const
const TLorentzVector &	Y () const
const TLorentzVector &	Z () const
const TLorentzVector &	T () const
TLorentzVector &	X ()
TLorentzVector &	Y ()
TLorentzVector &	Z ()
TLorentzVector &	T ()
const TLorentzVector &	operator[] (int i) const
TLorentzVector &	operator[] (int i)
LorentzMatrix &	add (const LorentzMatrix &other)
LorentzMatrix &	subtract (const LorentzMatrix &other)
LorentzMatrix &	mult (double s)
LorentzMatrix &	div (double s)
LorentzMatrix &	operator+= (const LorentzMatrix &rhs)
LorentzMatrix &	operator *= (double rhs)
LorentzMatrix &	operator-= (const LorentzMatrix &rhs)
LorentzMatrix &	operator/= (double rhs)
LorentzMatrix &	operator= (const LorentzMatrix &other)
LorentzMatrix	operator+ (const LorentzMatrix &rhs) const
LorentzMatrix	operator- (const LorentzMatrix &rhs) const
LorentzMatrix	operator * (double rhs) const
LorentzMatrix	operator/ (double rhs) const

Static Public Member Functions
static const SymmLorentzMatrix &	gmunu ()

Protected Member Functions
bool	symmetrize ()
bool	makeZero ()
Protected Member Functions inherited from LorentzMatrix
bool	makeZero ()

Static Protected Member Functions
static void	makeGmunu ()

Static Protected Attributes
static SymmLorentzMatrix *	__gmunu = 0

Additional Inherited Members
Protected Attributes inherited from LorentzMatrix
TLorentzVector	_v [4]

Detailed Description

Definition at line 7 of file SymmLorentzMatrix.h.

Constructor & Destructor Documentation

SymmLorentzMatrix() [1/4]

SymmLorentzMatrix::SymmLorentzMatrix ( )

inline

Definition at line 41 of file SymmLorentzMatrix.h.

: LorentzMatrix(){}

SymmLorentzMatrix() [2/4]

SymmLorentzMatrix::SymmLorentzMatrix ( const TLorentzVector  p[4] )

inline

Definition at line 42 of file SymmLorentzMatrix.h.

    :  LorentzMatrix(p) {};

SymmLorentzMatrix() [3/4]

SymmLorentzMatrix::SymmLorentzMatrix ( const TLorentzVector  p )

inline

Definition at line 45 of file SymmLorentzMatrix.h.

                                           {
    X().SetX(p.X() * p.X());
    X().SetY(p.X() * p.Y());
    X().SetZ(p.X() * p.Z());
    X().SetT(p.X() * p.T());

    Y().SetX(p.Y() * p.X());
    Y().SetY(p.Y() * p.Y());
    Y().SetZ(p.Y() * p.Z());
    Y().SetT(p.Y() * p.T());

    Z().SetX(p.Z() * p.X());
    Z().SetY(p.Z() * p.Y());
    Z().SetZ(p.Z() * p.Z());
    Z().SetT(p.Z() * p.T());

    T().SetX(p.T() * p.X());
    T().SetY(p.T() * p.Y());
    T().SetZ(p.T() * p.Z());
    T().SetT(p.T() * p.T());
  }

SymmLorentzMatrix() [4/4]

SymmLorentzMatrix::SymmLorentzMatrix ( const SymmLorentzMatrix &  other )

inline

Definition at line 66 of file SymmLorentzMatrix.h.

    : LorentzMatrix(other){}

Member Function Documentation

add()

SymmLorentzMatrix& SymmLorentzMatrix::add ( const SymmLorentzMatrix &  other )

inline

Definition at line 69 of file SymmLorentzMatrix.h.

                                                        {
    for(int i=0; i < 4; i++) _v[i] += other._v[i];
    return *this;
  }

Contract()

TLorentzVector SymmLorentzMatrix::Contract ( const TLorentzVector &  vec )

inline

Definition at line 85 of file SymmLorentzMatrix.h.

                                                    {
    // M^{mu nu} g_{nu alpha} v^{alpha}
    // M^{mu nu} v_{alpha}
    return vec.T()*T() - vec.X()*X() - vec.Y()*Y() -vec.Z()*Z();
  }

Contract_1()

LorentzMatrix SymmLorentzMatrix::Contract_1 ( const SymmLorentzMatrix &  M )

inline

Definition at line 90 of file SymmLorentzMatrix.h.

                                                      {
    // One pair of indices gets contracted. Since
    // both matrices are symmetric, it doesnt matter which.
    //
    // O^{mu alpha} g_{alpha beta} M^{beta nu} = R^{mu nu}
    // O^{mu alpha} M_{beta}^{nu}
    LorentzMatrix R;
    R.X() =  this->Contract(M.X());
    R.Y() =  this->Contract(M.Y());
    R.Z() =  this->Contract(M.Z());
    R.T() =  this->Contract(M.T()); // signs?

    return R;
  }

Contract_2()

double SymmLorentzMatrix::Contract_2 ( const SymmLorentzMatrix &  M )

inline

Definition at line 104 of file SymmLorentzMatrix.h.

                                               {
    // Both pairs of indices are contracted.
    // since the matrices are symmetric, it does
    // not matter which index from this with which form M.
    //
    // O^{mu alpha} g_{alpha beta} M^{beta nu} g_{mu nu}
    LorentzMatrix R(Contract_1(M));
    // R^{mu nu} R_{mu nu}
    double xx =  R.X().X();//Dot(R.X());
    double yy =  R.Y().Y();//Dot(R.Y());
    double zz =  R.Z().Z();//Dot(R.Z());
    double tt =  R.T().T();//Dot(R.T());
    
    return tt - xx - yy - zz; // signs?
  }

div()

SymmLorentzMatrix& SymmLorentzMatrix::div ( double  s )

inline

Definition at line 81 of file SymmLorentzMatrix.h.

                                  {
    for(int i=0; i < 4; i++) _v[i] *= (1./s);
    return *this;
  }

gmunu()

const SymmLorentzMatrix & SymmLorentzMatrix::gmunu ( )

static

Definition at line 10 of file SymmLorentzMatrix.cpp.

                                                 {
  if(0 == __gmunu) makeGmunu();
  return * __gmunu;
}

makeGmunu()

void SymmLorentzMatrix::makeGmunu ( )

staticprotected

Definition at line 16 of file SymmLorentzMatrix.cpp.

                                 {
  __gmunu = new SymmLorentzMatrix();
  __gmunu->X().SetXYZT(-1,0,0,0);
  __gmunu->Y().SetXYZT(0,-1,0,0);
  __gmunu->Z().SetXYZT(0,0,-1,0);
  __gmunu->T().SetXYZT(0,0,0, 1);
}

makeZero()

bool SymmLorentzMatrix::makeZero ( )

inlineprotected

Definition at line 32 of file SymmLorentzMatrix.h.

                 {
    X().SetXYZT(0,0,0,0);
    Y().SetXYZT(0,0,0,0);
    Z().SetXYZT(0,0,0,0);
    T().SetXYZT(0,0,0,0);
    return true;
  }

mult()

SymmLorentzMatrix& SymmLorentzMatrix::mult ( double  s )

inline

Definition at line 77 of file SymmLorentzMatrix.h.

                                   {
    for(int i=0; i < 4; i++) _v[i] *= s;
    return *this;
  }

operator *()

SymmLorentzMatrix SymmLorentzMatrix::operator * ( double  rhs ) const

inline

Definition at line 146 of file SymmLorentzMatrix.h.

                                              {
    SymmLorentzMatrix returnVal(*this);
    returnVal *= rhs;
    return returnVal;
  }

operator *=()

SymmLorentzMatrix& SymmLorentzMatrix::operator *= ( double  rhs )

inline

Definition at line 123 of file SymmLorentzMatrix.h.

                                           {
    return mult(rhs);
  }

operator+()

SymmLorentzMatrix SymmLorentzMatrix::operator+ ( const SymmLorentzMatrix &  rhs ) const

inline

Definition at line 136 of file SymmLorentzMatrix.h.

                                                                {
    SymmLorentzMatrix returnVal(*this);
    returnVal += rhs;
    return returnVal;
  }

operator+=()

SymmLorentzMatrix& SymmLorentzMatrix::operator+= ( const SymmLorentzMatrix &  rhs )

inline

Definition at line 120 of file SymmLorentzMatrix.h.

                                                             {
    return add(rhs);
  }

operator-()

SymmLorentzMatrix SymmLorentzMatrix::operator- ( const SymmLorentzMatrix &  rhs ) const

inline

Definition at line 141 of file SymmLorentzMatrix.h.

                                                                {
    SymmLorentzMatrix returnVal(*this);
    returnVal -= rhs;
    return returnVal;
  }

operator-=()

SymmLorentzMatrix& SymmLorentzMatrix::operator-= ( const SymmLorentzMatrix &  rhs )

inline

Definition at line 126 of file SymmLorentzMatrix.h.

                                                             {
    return subtract(rhs);
  }

operator/()

SymmLorentzMatrix SymmLorentzMatrix::operator/ ( double  rhs ) const

inline

Definition at line 151 of file SymmLorentzMatrix.h.

                                              {
    SymmLorentzMatrix returnVal(*this);
    returnVal /= rhs;
    return returnVal;
  }

operator/=()

SymmLorentzMatrix& SymmLorentzMatrix::operator/= ( double  rhs )

inline

Definition at line 129 of file SymmLorentzMatrix.h.

                                           {
    return div(rhs);
  }

operator=()

SymmLorentzMatrix& SymmLorentzMatrix::operator= ( const SymmLorentzMatrix &  other )

inline

Definition at line 132 of file SymmLorentzMatrix.h.

                                                              {
    for(int i=0; i<4; i++) _v[i] = other._v[i];
    return *this;
  }

subtract()

SymmLorentzMatrix& SymmLorentzMatrix::subtract ( const SymmLorentzMatrix &  other )

inline

Definition at line 73 of file SymmLorentzMatrix.h.

                                                             {
    for(int i=0; i < 4; i++) _v[i] -= other._v[i];
    return *this;
  }

symmetrize()

bool SymmLorentzMatrix::symmetrize ( )

inlineprotected

Definition at line 13 of file SymmLorentzMatrix.h.

                   {
    // clumsy but save
    X().SetY(Y().X());
    X().SetZ(Z().X());
    X().SetT(T().X());
    
    Y().SetX(X().Y());
    Y().SetZ(Z().Y());
    Y().SetT(T().Y());
    
    Z().SetX(X().Z());
    Z().SetY(Y().Z());
    Z().SetT(T().Z());
    
    T().SetX(X().T());
    T().SetY(Y().T());
    T().SetZ(Z().T());
    return true;
  }

Member Data Documentation

__gmunu

SymmLorentzMatrix * SymmLorentzMatrix::__gmunu = 0

staticprotected

Definition at line 9 of file SymmLorentzMatrix.h.

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

• Mint/SymmLorentzMatrix.h
• src/Mojito/Zemach/SymmLorentzMatrix.cpp