The anapole moment in scalar quantum electrodynamics

Details The anapole moment in scalar quantum electrodynamics The anapole moment in scalar quantum electrodynamics

2010-02-16

arxiv.org/abs/1002.3184v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure

Scientific paper

The anapole moment of a charged scalar particle is studied in a model independent fashion, using the effective Lagrangian technique, as well as radiatively within the context of scalar quantum electrodynamics (SQED). It is shown that this gauge structure is characterized by a non renormalizable interaction, which is radiatively generated at the one--loop. It is found that the resulting anapole moment for off-shell particles, though free of ultraviolet divergences, is gauge dependent and thus it is not a physical observable. We also study some of its kinematical limits. In particular, it is shown that its value comes out to be zero when all particles are on--shell.

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