First Results from a Broadband Search for Dark Photon Dark Matter in the 44 to 52 μeV range with a coaxial dish antenna
arxiv(2023)
摘要
We present first results from a dark photon dark matter search in the mass
range from 44 to 52 μ eV (10.7 - 12.5 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 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≳ 10^-12 in this range at 90
existing constraints by about two orders of magnitude and is the most stringent
bound on dark photons in this range below 49 μeV.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要