2020/03/31 by D. A. Palken, B. M. Brubaker, M. Malnou +17 · 1 citation
Physics and Astronomy · #astro-ph.IM #hep-ex #physics.data-an
paper · pdf · doi:10.1103/physrevd.101.123011
published as Phys. Rev. D 101, 123011 (2020) · 22 pages, 5 figures
arxiv created 2020/07/29 · arxiv updated 2020/07/30
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 gγ while also identifying the most promising regions of parameter space within the 23.15--24.0 μeV 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.