Probing Light Pseudoscalar Particles Using Synchrotron Light
  The need for purely laboratory-based light pseudoscalar particles searches
has been emphasized many times in the literature, since astrophysical bounds on
these particles rely on several assumptions to calculate the flux produced in
stellar plasmas. In this paper we study the use of light from synchrotron
accelerators as a source for a photon regeneration experiment also know as
"light shining through a wall". Such an experiment can significantly improve
present limits on the pseudoscalar particle mass and the pseudoscalar-photon
coupling constant obtained from laser experiments. This is possible even using
a small number of powerful magnets (B = 10 T), due to the large incident photon
flux. On the other hand, the use of a broadband incident photon-beam instead of
infrared or optical lasers allows a significant improvement in the mass reach
of the experiment (it is possible to test masses up to 0.01 eV without a drop
in sensitivity). Large, but still feasible, configurations can explore in a
quite model-independent way a large part of the parameter space examined by
solar searches and HB stars in globular clusters. Additionally, the proposal
may be useful for testing string motivated effective theories containing light
and weakly interacting particles.
