Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 45: Search for Dark Matter 2
T 45.3: Talk
Tuesday, March 5, 2024, 16:30–16:45, Geb. 30.35: HSI
Search for Dark Matter with the Relic Axion Dark-Matter Exploratory Setup (RADES) — Saiyd Ahyoune1, Alejandro Álvarez Melcón2, Sergio Arguedas Cuendis1, Sergio Calatroni3, Cristian Cogollos4, Alejandro Díaz-Morcillo2, Babette Döbrich4, Juan Daniel Gallego5, José María García-Barceló4, Benito Gimeno6, Jessica Golm3,7, Xavier Granados8, Joffre Gutierrez8, •Louis Herwig4,9, Igor García Irastorza10, Neil Lamas8, Antonio Lozano-Guerrero2, William L. Millar3, Chloé Malbrunot11, Jordi Miralda-Escudé1,12, Pablo Navarro2, Jose R. Navarro-Madrid2, Teresa Puig8, Marc Siodlaczek13, Guilherme Telles8, and Walter Wuensch3 — 1Institut de Ciències del Cosmos, Universitat de Barcelona — 2Department of Information and Communications Technologies, Technical University of Cartagena — 3CERN - European Organization for Nuclear Research — 4Max-Planck-Institut für Physik — 5Yebes Observatory (IGN) — 6Instituto de Física Corpuscular (IFIC), CSIC-University of Valencia — 7Institute for Optics and Quantum Electronics, Friedrich Schiller University Jena — 8Institut de Ciència de Materials de Barcelona, CSIC — 9Technical University of Munich — 10Center for Astroparticles and High Energy Physics (CAPA), Universidad de Zaragoza — 11TRIUMF — 12Institució Catalana de Recerca i Estudis Avançats — 13Technical University of Darmstadt, Institute for Energy Systems and Technology
The axion is a pseudoscalar particle, proposed as an extension to the Standard Model of particle physics, that is theorized to solve the strong CP problem in quantum chromodynamics by introducing a new symmetry that prevents CP violations in strong interactions. Additionally, it is considered a potential candidate for dark matter, offering a solution beyond the existing framework of the Standard Model. The RADES haloscope targets cosmic axions originating from the dark matter halo that surrounds our galaxy like a sphere. In the following, we describe the result of a haloscope axion search performed with an 11.7 T dipole magnet at CERN. We also reinterpreted our findings for dark photon limits, noting that the dark photon, a vector particle, is distinct due to its polarization. The search used a custom-made radio-frequency cavity coated with high-temperature superconducting tape. A set of several hours of data at a resonant frequency of around 8.84 GHz was analysed. In the currently unexplored axion mass range of around 36 µeV, we present the results of our search. Correspondingly, in this mass range, we also set a limit on the axion to photon coupling strength.
Keywords: axion; dark matter; dark photon; haloscope