ADMX Axion Dark Matter Bounds around <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mn>3.3</mml:mn> <mml:mtext> </mml:mtext> <mml:mtext> </mml:mtext> <mml:mi mathvariant="normal">μ</mml:mi> <mml:mi>eV</mml:mi> </mml:mrow> </mml:math> with Dine-Fischler-Srednicki-Zhitnitsky Discovery Ability
Craig A. Goodman, M. Guzzetti, C. Hanretty, L. J Rosenberg, G. Rybka, J. Sinnis, Dan Zhang, John Clarke, Irfan Siddiqi, A. S. Chou, M. Hollister, S. Knirck, A. Sonnenschein, T. J. Caligiure, J. R. Gleason, A. T. Hipp, P. Sikivie, M. E. Solano, N. S. Sullivan, D. B. Tanner, R. Khatiwada, G. Carosi, C. Cisneros, N. Du, N. Robertson, N. Woollett, L. D. Duffy, C. Boutan, T. Braine, E. Lentz, N. S. Oblath, M. S. Taubman, E. J. Daw, C. Mostyn, M. G. Perry, C. Bartram, T. A. Dyson, S. Ruppert, M. O. Withers, C. L. Kuo, Ben T. McAllister, J. H. Buckley, C. Gaikwad, J. H. Hoffman, Kater Murch, Maxim Goryachev, E. Hartman, A. Quiskamp, M. E. Tobar
Abstract
We report the results of a QCD axion dark matter search with discovery ability for Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) axions using an axion haloscope. Sub-Kelvin noise temperatures are reached with an ultralow noise Josephson parametric amplifier cooled by a dilution refrigerator. This work excludes (with a 90% confidence level) DFSZ axions with masses between 3.27 to 3.34 μeV, assuming a standard halo model with a local energy density of 0.45 GeV/cm^{3} made up 100% of axions.