Photon Regeneration from Pseudoscalars at X-Ray Laser Facilities

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Raúl Rabadán,¹ Andreas Ringwald,² and Kris Sigurdson¹
¹Institute for Advanced Study, Einstein Drive, Princeton, New Jersey 08540, USA
²Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, D-22607 Hamburg, Germany

See Also: Editorial Note

Received 5 December 2005; published 24 March 2006

Recently,the PVLAS Collaboration reported an anomalously large rotation of thepolarization of light in the presence of a magnetic fieldin vacuum. As a possible explanation, they consider the existenceof a light spin-zero particle coupled to two photons. Wepropose here a method of independently testing this result usinga high-energy photon regeneration experiment (the x-ray analogue of "invisiblelight shining through walls") using the synchrotron x rays froma free-electron laser. With such an experiment the region ofparameter space implied by PVLAS could be probed in amatter of minutes.

URL:	http://link.aps.org/doi/10.1103/PhysRevLett.96.110407
DOI:	10.1103/PhysRevLett.96.110407
PACS:	14.80.-j; 41.50.+h 14.80.-j Other particles (including hypothetical) 41.50.+h X-ray beams and X-ray optics YEAR: 2006
KEYWORDS:	free electron lasers, light polarisation, photons, X-ray optics

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Editorial Note: Experimental Observation of Optical Rotation Generated in Vacuum by a Magnetic Field [Phys. Rev. Lett. 96, 110406 (2006)]
E. Zavattini, G. Zavattini, G. Ruoso et al.
Phys. Rev. Lett. 99, 129901 (E) (2007)
Experimental Observation of Optical Rotation Generated in Vacuum by a Magnetic Field
E. Zavattini, G. Zavattini, G. Ruoso et al.
Phys. Rev. Lett. 96, 110406 (2006)