Search for Axion Dark Matter from 1.1 to 1.3 GHz with ADMX

G Carosi¹, C Cisneros¹, N Du¹, S Durham¹, N Robertson¹, C Goodman², M Guzzetti², C Hanretty², K Enzian², L J Rosenberg², G Rybka², J Sinnis², D Zhang², John Clarke³, I Siddiqi³, A S Chou⁴, M Hollister⁴, A Sonnenschein⁴, S Knirck⁵, T J Caligiure⁶, J R Gleason⁶, A T Hipp⁶, P Sikivie⁶, M E Solano⁶, N S Sullivan⁶, D B Tanner⁶, R Khatiwada⁷, L D Duffy⁸, C Boutan⁹, T Braine⁹, E Lentz⁹, N S Oblath⁹, M S Taubman⁹, E J Daw¹⁰, C Mostyn¹⁰, M G Perry¹⁰, C Bartram¹¹, J Laurel¹¹, A Yi¹¹, T A Dyson¹², S Ruppert¹², M O Withers¹², C L Kuo¹³, B T McAllister¹⁴, J H Buckley¹⁵, C Gaikwad¹⁵, J Hoffman¹⁵, K Murch¹⁵, M Goryachev¹⁶, E Hartman¹⁶, A Quiskamp¹⁶, M E Tobar¹⁶; ADMX Collaboration

Affiliations

¹ Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
² University of Washington, Seattle, Washington 98195, USA.
³ University of California, Berkeley, California 94720, USA.
⁴ Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
⁵ Harvard University, Cambridge, Massachusetts 02138, USA.
⁶ University of Florida, Gainesville, Florida 32611, USA.
⁷ Fermi National Accelerator Laboratory, Illinois Institute of Technology, Chicago, Illinois 60616, USA and , Batavia, Illinois 60510, USA.
⁸ Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
⁹ Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
¹⁰ University of Sheffield, Sheffield S10 2TN, United Kingdom.
¹¹ SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
¹² Stanford University, Stanford, California 94305, USA.
¹³ Stanford University, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA and , Stanford, California 94305, USA.
¹⁴ Swinburne University of Technology, John Street, Hawthorn, Victoria 3122, Australia.
¹⁵ Washington University, St. Louis, Missouri 63130, USA.
¹⁶ University of Western Australia, Perth, Western Australia 6009, Australia.

PMID: 41269976
DOI: 10.1103/d7mg-6sqq

Free article

Search for Axion Dark Matter from 1.1 to 1.3 GHz with ADMX

G Carosi et al. Phys Rev Lett. 2025.

Free article

. 2025 Nov 7;135(19):191001.

doi: 10.1103/d7mg-6sqq.

Authors

Affiliations

¹ Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
² University of Washington, Seattle, Washington 98195, USA.
³ University of California, Berkeley, California 94720, USA.
⁴ Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
⁵ Harvard University, Cambridge, Massachusetts 02138, USA.
⁶ University of Florida, Gainesville, Florida 32611, USA.
⁷ Fermi National Accelerator Laboratory, Illinois Institute of Technology, Chicago, Illinois 60616, USA and , Batavia, Illinois 60510, USA.
⁸ Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
⁹ Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
¹⁰ University of Sheffield, Sheffield S10 2TN, United Kingdom.
¹¹ SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
¹² Stanford University, Stanford, California 94305, USA.
¹³ Stanford University, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA and , Stanford, California 94305, USA.
¹⁴ Swinburne University of Technology, John Street, Hawthorn, Victoria 3122, Australia.
¹⁵ Washington University, St. Louis, Missouri 63130, USA.
¹⁶ University of Western Australia, Perth, Western Australia 6009, Australia.

PMID: 41269976
DOI: 10.1103/d7mg-6sqq

Abstract

Axion dark matter can satisfy the conditions needed to account for all of the dark matter and solve the strong CP problem. The Axion Dark Matter eXperiment (ADMX) is a direct dark matter search using a haloscope to convert axions to photons in an external magnetic field. Key to this conversion is the use of a microwave resonator that enhances the sensitivity at the frequency of interest. The ADMX experiment boosts its sensitivity using a dilution refrigerator and near quantum-limited amplifier to reduce the noise level in the experimental apparatus. In the most recent run, ADMX searched for axions between 1.10 and 1.31 GHz to extended Kim-Shifman-Vainshtein-Zakharov sensitivity. This Letter reports on the results of that run, as well as unique aspects of this experimental setup.

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Search for Axion Dark Matter from 1.1 to 1.3 GHz with ADMX

Affiliations

Search for Axion Dark Matter from 1.1 to 1.3 GHz with ADMX

Authors

Affiliations

Abstract

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