P4JacobianPxPyPzM2PxPyPzE Class Reference

#include <P4JacobianPxPyPzM2PxPyPzE.h>

Inheritance diagram for P4JacobianPxPyPzM2PxPyPzE:

Collaboration diagram for P4JacobianPxPyPzM2PxPyPzE:

Public Member Functions
	P4JacobianPxPyPzM2PxPyPzE (double px, double py, double pz, double M)

Detailed Description

Definition at line 10 of file P4JacobianPxPyPzM2PxPyPzE.h.

Constructor & Destructor Documentation

P4JacobianPxPyPzM2PxPyPzE()

P4JacobianPxPyPzM2PxPyPzE::P4JacobianPxPyPzM2PxPyPzE	(	double	px,
		double	py,
		double	pz,
		double	M )

Definition at line 10 of file P4JacobianPxPyPzM2PxPyPzE.cxx.

                                        :
  HepMatrix(4,4,0)
{
  double pt2 = px*px + py*py;
  double p2 = pt2 + pz*pz;
  double E = std::sqrt( std::max( 0., M*M + p2));
 
  (*this)[0][0] = 1; // dpx/dpx
  (*this)[1][1] = 1; // dpy/dpy
  (*this)[2][2] = 1; // dpz/dpz
 
  (*this)[3][0] = px/E;     // dM/dpx
  (*this)[3][1] = py/E;     // dM/dpy
  (*this)[3][2] = pz/E;     // dM/dpz
  (*this)[3][3] = M/E;      // dM/dE
}

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

• P4JacobianPxPyPzM2PxPyPzE.h
• P4JacobianPxPyPzM2PxPyPzE.cxx