First Results of the Full-Scale OSQAR Photon Regeneration Experiment
  Recent intensive theoretical and experimental studies shed light on possible new physics beyond the standard model of particle physics, which can be probed with sub-eV energy experiments. In the second run of the OSQAR photon regeneration experiment, which looks for the conversion of photon to axion (or Axion-Like Particle), two spare superconducting dipole magnets of the Large Hadron Collider (LHC) have been used. In this paper we report on first results obtained from a light beam propagating in vacuum within the 9 T field of two LHC dipole magnets. No excess of events above the background was detected and the two-photon couplings of possible new scalar and pseudo-scalar particles could be constrained. 
Matthias Schott, Pierre Pugnat, Rafik Ballou, Lionel Duvillaret, Tomas   Husek, Remy Jost, Lucie Flekova, Michael Finger, Mi...
hep-ex