New ALPS Results on Hidden-Sector Lightweights
Klaus Ehret (1), Maik Frede (2), Samvel Ghazaryan (1), Matthias, Hildebrandt (2), Ernst-Axel Knabbe (1), Dietmar Kracht (2), Axel Lindner (1),, Jenny List (1), Tobias Meier (3), Niels Meyer (1), Dieter Notz (1), Javier, Redondo (1, 4), Andreas Ringwald (1)
TL;DR
The ALPS experiment enhances constraints on light WISPs like axion-like particles and hidden photons through upgraded photon oscillation searches, setting the most stringent laboratory limits to date.
Contribution
This paper reports new results from the ALPS experiment with upgraded setup, improving limits on WISP-photon conversion probabilities.
Findings
Set new upper limits on photon-WISP conversion probability (~10^{-25})
Provided the most stringent laboratory constraints on low-mass axion-like particles
Constrained the existence of hidden photons and minicharged particles
Abstract
The ALPS collaboration runs a "Light Shining through a Wall" (LSW) experiment to search for photon oscillations into "Weakly Interacting Sub-eV Particles" (WISPs) often predicted by extensions of the Standard Model. The experiment is set up around a superconducting HERA dipole magnet at the site of DESY. Due to several upgrades of the experiment we are able to place limits on the probability of photon-WISP-photon conversions of a few 10^{-25}. These limits result in today's most stringent laboratory constraints on the existence of low mass axion-like particles, hidden photons and minicharged particles.
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