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Effects of the magnetic dipole moment of charged vector mesons in their radiative decay distribution
We consider the effects of anomalous magnetic dipole moments of vector mesons
in the decay distribution of photons emitted in two-pseudoscalar decays of
charged vector mesons. By choosing a kinematical configuration appropriate to
isolate these effects from model-dependent and dominant bremsstrahlung
contributions, we show that this method can provide a valid alternative for a
measurement of the unknown magnetic dipole moments of charged vector mesons.Comment: Latex, 11 pages incl. 3 .ps figures, to appear in Phys. Rev.
Cyclic Lorentzian Lie Groups
We consider Lie groups equipped with a left-invariant cyclic Lorentzian
metric. As in the Riemannian case, in terms of homogeneous structures, such
metrics can be considered as different as possible from bi-invariant metrics.
We show that several results concerning cyclic Riemannian metrics do not extend
to their Lorentzian analogues, and obtain a full classification of three- and
four-dimensional cyclic Lorentzian metrics
Arithmetic and the standard electroweak theory
We propose the relations 1/e - e =3 and tan(2theta_W)=3/2, where e is the
positron charge and theta_W is the weak angle. Present experimental data
support these relations to a very high accuracy. We suggest that some duality
relates the weak isospin and hypercharge gauge groups of the standard
electroweak theory.Comment: Latex, 6 page
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