Taiwan Axion Search Experiment with Haloscope: CD102 Analysis Details

TL;DR

This paper details the analysis of the first data run of the Taiwan Axion Search Experiment with Haloscope, setting new limits on axion-photon coupling in the microwave frequency range.

Contribution

It provides the first analysis of TASEH data, excluding certain axion models with coupling strengths above a specified threshold in a specific mass range.

Findings

Excluded axion-two-photon couplings > 8.2×10^{-14} GeV^{-1}

Set new upper limits on axion models in the 19.4687-19.8436 μeV mass range

Demonstrated the feasibility of microwave cavity searches in Taiwan

Abstract

This paper presents the analysis of the data acquired during the first physics run of the Taiwan Axion Search Experiment with Haloscope (TASEH), a search for axions using a microwave cavity at frequencies between 4.70750 and 4.79815 GHz. The data were collected from October 13, 2021 to November 15, 2021, and are referred to as the CD102 data. The analysis of the TASEH CD102 data excludes models with the axion-two-photon coupling $|g_{a\gamma\gamma}| \gtrsim 8.2\times 10^{-14}$ GeV$^{-1}$, a factor of eleven above the benchmark KSVZ model for the mass range 19.4687 < ma < 19.8436 $\mu$eV.