Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2007-07-09
Phys.Rev.Lett.99:190403,2007
Physics
High Energy Physics
High Energy Physics - Experiment
Version that will appear in Physical Review Letters, Vol. 99, n. 18, (2 Nov 2007)
Scientific paper
10.1103/PhysRevLett.99.190403
Recently, axion-like particle search has received renewed interest. In particular, several groups have started ``light shining through a wall'' experiments based on magnetic field and laser both continuous, which is very demanding in terms of detector background. We present here the 2$\sigma$ limits obtained so far with our novel set-up consisting of a pulsed magnetic field and a pulsed laser. In particular, we have found that the axion-like particle two photons inverse coupling constant $M$ is $> 8\times 10^5$ GeV provided that the particle mass $m_\mathrm{a} \sim$ 1 meV. Our results definitively invalidate the axion interpretation of the original PVLAS optical measurements with a confidence level greater than 99.9%.
Amiranoff Francois
Battesti Remy
Fouché Mathilde
Mauchain Julien
Rizzo Carlo
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