Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2007-02-13
Physics
High Energy Physics
High Energy Physics - Experiment
11 pages, 13 figures, pdf file including high quality figures available at the webpage of the ALPS experiment: http://alps.des
Scientific paper
Recently, the PVLAS collaboration has reported evidence for an anomalous rotation of the polarization of light in vacuum in the presence of a transverse magnetic field. This may be explained through the production of a new light spin-zero (axion-like) neutral particle coupled to two photons. In this letter-of-intent, we propose to test this hypothesis by setting up a photon regeneration experiment which exploits the photon beam of a high-power infrared laser, sent along the transverse magnetic field of a superconducting HERA dipole magnet. The proposed ALPS (Axion-Like Particle Search) experiment offers a window of opportunity for a rapid firm establishment or exclusion of the axion-like particle interpretation of the anomaly published by PVALS. It will also allow for the measurement of mass, parity, and coupling strength of this particle. [The experiment has been approved by the DESY directorate on January 11, 2007.]
Ehret Klaus
Frede Maik
Knabbe Ernst-Axel
Kracht Dietmar
Lindner Axel
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