First results from BRASS-p broadband searches for hidden photon dark matter

Author:

Fayez Bajjali, Sven Dornbusch, Marko Ekmedžić, Dieter Horns, Christoph Kasemann, Andrei Lobanov, Artak Mkrtchyan, Le Hoang Nguyen, Martin Tluczykont, Gino Tuccari, Johannes Ulrichs, Gundolf Wieching, Anton Zensus

Keyword:

High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Instrumentation and Detectors (physics.ins-det)

journal:

JCAP08(2023)077

date:

2023-06-08 16:00:00

Abstract

We discuss first results from hidden photon dark matter searches made with a prototype of the Broadband Radiometric Axion/ALPs Search Setup (BRASS-p) in the range of particle mass of 49.63-74.44 $\mu$eV (frequency range of 12-18 GHz). The conceptual design of BRASS and a detailed description of its present prototype, BRASS-p, are given, with a view of the potential application of such setups to hidden photon, axion, and axion-like particle (ALP) dark matter searches using heterodyne detectors in the range of particle mass from 40$\mu$eV to 4000$\mu$eV (10 GHz to 1 THz). Pioneering measurements made with BRASS-p achieve the record sensitivity of (0.3--1.0)$\times$$10^{-13}$ to the kinetic mixing between the normal and hidden photons, assuming the dark matter is made entirely of unpolarized hidden photons. Based on these results, a discussion of further prospects for dark matter searches using the BRASS-p apparatus is presented.

PDF: First results from BRASS-p broadband searches for hidden photon dark matter.pdf