An improved analysis framework for axion dark matter searches

Abstract

In experiments searching for axionic dark matter, the use of the standard threshold-based data analysis discards valuable information. We present a Bayesian analysis framework that builds on an existing processing protocol to extract more information from the data of coherent axion detectors such as operating haloscopes. The analysis avoids logical subtleties that accompany the standard analysis framework and enables greater experimental flexibility on future data runs. Performing this analysis on the existing data from the HAYSTAC experiment, we find improved constraints on the axion-photon coupling $g_{\gamma }$ while also identifying the most promising regions of parameter space within the $23.15$--$24.0$ $\mu$eV mass range. A comparison with the standard threshold analysis suggests a $36\%$ improvement in scan rate from our analysis, demonstrating the utility of this framework for future axion haloscope analyses.

22 pages, 5 figures

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Cited by in corpus (13)

• A quantum-enhanced search for dark matter axions
• Feebly-Interacting Particles:FIPs 2020 Workshop Report
• Experimental constraint on axion-like particle coupling over seven orders of magnitude in mass
• Dark Matter Axion Search with HAYSTAC Phase II
• Extended Axion Dark Matter Search Using the CAPP18T Haloscope
• HeLIOS: The Superfluid Helium Ultralight Dark Matter Detector
• Bias-Free Estimation of Signals on Top of Unknown Backgrounds
• Sequential hypothesis testing for Axion Haloscopes
• Electromagnetic modeling and science reach of DMRadio-m${}^3$
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• Optomechanical Accelerometer Search for Ultralight Dark Matter