DOI: 10.5281/zenodo.4721923
title: Dark Photon Exclusions from Existing Axion Haloscope Measurements

description: Dark photon exclusions for unpolarized dark photons converted from axion measurements in a .mat file. Keys for the data are 'RBF_ueV', 'RBF_chi', 'UF_ueV', 'UF_chi', 'HAYSTAC_ueV', 'HAYSTAC_chi', 'ADMX_ueV', 'ADMX_chi', 'CAPP_ueV', and 'CAPP_chi' to obtain exclusions for unpolarized dark photons for each of these experiments. In order to obtain the n% confidence exclusions for the polarized case (with the slightly wrong assumption of instantaneous measurements), multiply the "chi" arrays by 3 then divide by (1-n); for example, to obtain the filled-in exclusions in Figure 1 of the related arxiv manuscript where n=95%, multiply the "chi" arrays by 3/0.05. Please note that this confidence is on the random variable of the dot product between the axis of the haloscope cavity and the polarization of the dark photon, not on the entire exclusion. To use this file format in Python, use a script like the following: <pre>import matplotlib.pyplot as plt from scipy.io import loadmat mat_file = loadmat('haloscope_exclusions_unpolarized.mat') masses_in_ueV = mat_file['HAYSTAC_ueV'] chi_exclusion = mat_file['HAYSTAC_chi'] plt.figure() plt.semilogy(masses_in_ueV, chi_exclusion) plt.xlabel('Mass ($\mu$eV)') plt.ylabel('$\chi$') plt.title('HAYSTAC dark photon exclusions') plt.show() </pre>
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