Speaker
Description
A theoretical solution to a long-standing puzzle in quantum chromodynamics, known as the strong CP problem, have led to the proposition of a hypothetical pseudo-Goldstone boson, the axion. Additionally, axions have growing attention due to their potential role as cold dark matter in our Universe. Interestingly, theoretical prediction to the axion mass from different research groups overlap notably in the mass range between 20 and 30 μeV. We conducted an experiment targeting this specific mass range, focusing on 22 μeV (5.3GHz) with KSVZ sensitivity. This experiment was conducted using an improved multiple-cell cavity and a high-performance Josephson parametric amplifier with less than two noise photons, operating at 30 mK, within a 12 T magnetic field. In this talk, we will report the first experimental results around 22 μeV.
