Work

Search for Axion Dark Matter around \texorpdfstring{$15.6\,μ\text{eV}$}{15.6 microeV} with a Broadly Tunable High-Temperature Superconducting Cavity

Year: 2026

Type: preprint

Abstract: We report an axion dark matter search in the mass range of $15.30\text{--}15.85\,μ\text{eV}$ using a broadly tunable high-temperature superconducting (HTS) haloscope. By soldering substrate-stripped rare-earth barium copper oxide (REBCO) films onto a copper shell, we achieved a quality factor 3--4 times higher than in copper cavities across its tuning band in an 8\text{-T} magnetic field. We set robust Frequentist 90\%~confidence-level exclusion limits on the axion--photon coupling down to 1.3 times the KSVZ coupling, while a complementary Bayesian analysis achieves KSVZ-level sensitivity.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.08144

Authors: Lee, Jiwon, Kim, Jinsu, Kwon, Ohjoon, Ahn, Saebyeok, Oh, Seonjeong, Uchaikin, Sergey, Ivanov, Boris, van Loo, Arjan Ferdinand, Nakamura, Yasunobu, Youm, Dojun, Youn, SungWoo, Choi, HyoungSoon

Institutions: Korea Advanced Institute of Science and Technology, Institute for Basic Science, RIKEN Center for Quantum Computing, The University of Tokyo

Language: English

Topic: Dark Matter and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Institute for Basic Science, Japan Society for the Promotion of Science

Awards: Waveguide quantum electrodynamics on superconducting circuits and its applications, G6345427974, G866626658

OpenAlex ID: W7211987914

Cites: 2

Cited by: 1

Related to: 10