P5toP4JacobianPhiThetaEM2PxPyPzE Node1 P5toP4JacobianPhiThetaEM2 PxPyPzE + P5toP4JacobianPhiThetaEM2 PxPyPzE() + ~P5toP4JacobianPhiThetaEM2 PxPyPzE() Node2 HepMatrix Node2->Node1