Broadband interferometry-based searches for photon-axion conversion in vacuum

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Auteurs principaux: Batllori, Josep Maria, Horns, Dieter, Maroudas, Marios
Format: Preprint
Publié: 2025
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author Batllori, Josep Maria
Horns, Dieter
Maroudas, Marios
author_facet Batllori, Josep Maria
Horns, Dieter
Maroudas, Marios
contents A novel experiment is introduced to detect photon-axion conversion independent of the dark-matter hypothesis in a broad mass-range called WISP Interferometer (WINTER). The setup consists of a free-space Mach-Zehnder-type interferometer incorporating an external magnetic field and vacuum in one of the arms, where photon-axion mixing occurs via the Primakoff effect and is detected through changes in amplitude. The expected axion-induced signal is then modulated by polarization changes. The experiment is designed to integrate a Fabry-Pérot cavity with a finesse of $10^{5}$ that will be operated in a vacuum environment, significantly enhancing the sensitivity. It is projected to reach the DFSZ theoretical line with photon-axion coupling sensitivities down to $g_{aγγ}\simeq 3.7\times10^{-14}$ $\text{GeV}^{-1}$ for axion masses up to 380 $μ$eV.
format Preprint
id arxiv_https___arxiv_org_abs_2509_16725
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Broadband interferometry-based searches for photon-axion conversion in vacuum
Batllori, Josep Maria
Horns, Dieter
Maroudas, Marios
High Energy Physics - Experiment
A novel experiment is introduced to detect photon-axion conversion independent of the dark-matter hypothesis in a broad mass-range called WISP Interferometer (WINTER). The setup consists of a free-space Mach-Zehnder-type interferometer incorporating an external magnetic field and vacuum in one of the arms, where photon-axion mixing occurs via the Primakoff effect and is detected through changes in amplitude. The expected axion-induced signal is then modulated by polarization changes. The experiment is designed to integrate a Fabry-Pérot cavity with a finesse of $10^{5}$ that will be operated in a vacuum environment, significantly enhancing the sensitivity. It is projected to reach the DFSZ theoretical line with photon-axion coupling sensitivities down to $g_{aγγ}\simeq 3.7\times10^{-14}$ $\text{GeV}^{-1}$ for axion masses up to 380 $μ$eV.
title Broadband interferometry-based searches for photon-axion conversion in vacuum
topic High Energy Physics - Experiment
url https://arxiv.org/abs/2509.16725