Conservation of Helicity and SU(2) Symmetry in First Order Scattering

Details Conservation of Helicity and SU(2) Symmetry in First Order Scattering Conservation of Helicity and SU(2) Symmetry in First Order Scattering

2005-02-21

arxiv.org/abs/hep-th/0502177v1

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, two figures, Revtex

Scientific paper

The structure of the spin interaction operator (SI) (the interaction that remains after space variables are integrated out) in the first order S-matrix element of the elastic scattering of a Dirac particle in a general helicity-conserving vector potential is investigated.It is shown that the conservation of helicity dictates a specific form of the SI regardless of the explicit form of the vector potential. This SI closes the SU(2) algebra with other two operators in the spin space of the particle. The directions of the momentum transfer vector and the vector bisecting the scattering angle seem to define some sort of "intrinsic" axes at this order that act as some symmetry axes for the whole spin dynamics . The conservation of helicity at this order can be formulated as the invariance of the component of the helicity of the particle along the bisector of the scattering angle in the transition.

Affiliated with

Also associated with

No associations

Rating

Conservation of Helicity and SU(2) Symmetry in First Order Scattering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Conservation of Helicity and SU(2) Symmetry in First Order Scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conservation of Helicity and SU(2) Symmetry in First Order Scattering will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-197582