Extracting vector mesons magnetic dipole moment from radiative decays

Details Extracting vector mesons magnetic dipole moment from radiative decays Extracting vector mesons magnetic dipole moment from radiative decays

2002-12-16

arxiv.org/abs/hep-ph/0212235v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages,plain tex, 2 figures. To appear in the proceedings of the 5th Int.Conf. "Quark confinement and the hadron spectrum", G

Scientific paper

The possibility that the magnetic dipole moment (MDM) of light charged vector mesons could be measured from radiative processes involving the production (\tau \to \rho \nu \gamma) and decay(\rho \to \pi \pi \gamma) of vector mesons is studied in a model independent way, via the soft-photon approximation. The angular and energy distribution of photons emitted at small angles respect to the final charged particle is found be sensitive to the effects of the MDM. We also show that model dependent contributions have a general structure, by gauge invariance requirements, that allows suppress them in the same kinematical region where the MDM effect is more important in the model independent approach.

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