Jack W. D. Halliday, Giacomo Marocco, Konstantin A. Beyer, Charles Heaton, Motoaki Nakatsutsumi, Thomas R. Preston, Charles D. Arrowsmith, Carsten Baehtz, Sebastian Goede, Oliver Humphries, Alejandro Laso Garcia, Richard Plackett, Pontus Svensson, Georgios Vacalis, Justin Wark, Daniel Wood, Ulf Zastrau, Robert Bingham, Ian Shipsey, Subir Sarkar, Gianluca Gregori
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Abstract
We present new exclusion bounds obtained at the European X-Ray Free Electron Laser facility (EuXFEL) on axionlike particles in the mass range 10−3eV≲ma≲104eV. Our experiment exploits the Primakoff effect via which photons can, in the presence of a strong external electric field, decay into axions, which then convert back into photons after passing through an opaque wall. While similar searches have been performed previously at a third-generation synchrotron [Yamaji , ], our work demonstrates improved sensitivity, exploiting the higher brightness of x-rays at EuXFEL. Published by the American Physical Society2025
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Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics:
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