First Results from a Broadband Search for Dark Photon Dark Matter in the $44$ to $52\,μ$eV range with a coaxial dish antenna

Stefan Knirck; Gabe Hoshino; Mohamed H. Awida; Gustavo I. Cancelo; Martin Di Federico; Benjamin Knepper; Alex Lapuente; Mira Littmann; David W. Miller; Donald V. Mitchell; Derrick Rodriguez; Mark K. Ruschman; Matthew A. Sawtell; Leandro Stefanazzi; Andrew Sonnenschein; Gary W. Teafoe; Daniel Bowring; G. Carosi; Aaron Chou; Clarence L. Chang; Kristin Dona; Rakshya Khatiwada; Noah A. Kurinsky; Jesse Liu; Cristián Pena; Chiara P. Salemi; Christina W. Wang; Jialin Yu

doi:10.1103/physrevlett.132.131004

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arXiv · 2310.13891

First Results from a Broadband Search for Dark Photon Dark Matter in the $44$ to $52\,μ$eV range with a coaxial dish antenna

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Abstract

We present first results from a dark photon dark matter search in the mass range from 44 to 52 $μ{\rm eV}$ ($10.7 - 12.5\,{\rm GHz}$) using a room-temperature dish antenna setup called GigaBREAD. Dark photon dark matter converts to ordinary photons on a cylindrical metallic emission surface with area $0.5\,{\rm m}^2$ and is focused by a novel parabolic reflector onto a horn antenna. Signals are read out with a low-noise receiver system. A first data taking run with 24 days of data does not show evidence for dark photon dark matter in this mass range, excluding dark photon - photon mixing parameters $χ\gtrsim 10^{-12}$ in this range at 90% confidence level. This surpasses existing constraints by about two orders of magnitude and is the most stringent bound on dark photons in this range below 49 $μ$eV.

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Stefan Knirck, Gabe Hoshino, Mohamed H. Awida, Gustavo I. Cancelo, Martin Di Federico, Benjamin Knepper, Alex Lapuente, Mira Littmann, David W. Miller, Donald V. Mitchell, Derrick Rodriguez, Mark K. Ruschman, Matthew A. Sawtell, Leandro Stefanazzi, Andrew Sonnenschein, Gary W. Teafoe, Daniel Bowring, G. Carosi, Aaron Chou, Clarence L. Chang, Kristin Dona, Rakshya Khatiwada, Noah A. Kurinsky, Jesse Liu, Cristián Pena, Chiara P. Salemi, Christina W. Wang, Jialin Yu. 2024-05-03. First Results from a Broadband Search for Dark Photon Dark Matter in the $44$ to $52\,μ$eV range with a coaxial dish antenna. https://doi.org/10.1103/physrevlett.132.131004

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