Frame Dependence of Spin-One Angular Conditions in Light Front Dynamics

Abstract

We elaborate the frame dependence of the angular conditions for spin-1 form factors. An extra angular condition is found in addition to the usual angular condition relating the four helicity amplitudes. Investigating the frame-dependence of the angular conditions, we find that the extra angular condition is in general as complicated as the usual one, although it becomes very simple in the $q^{+}=0$ frame involving only two helicity amplitudes. It is confirmed that the angular conditions are identical in frames that are connected by kinematical transformations. The high $Q^2$ behaviors of the physical form factors and the limiting behaviors in special reference frames are also discussed.

29 pages RevTeX. submitted to Phys. Rev. D

References in corpus (2)

• Skewed quark distribution of the pion in the light-front quark model
• Poincare Invariant Algebra From Instant to Light-Front Quantization

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