Comment on arXiv:1901.10843 "Search for Axionlike Dark Matter with a Liquid-State Nuclear Spin Comagnetometer"

TL;DR

This paper critiques a previous study on axion-like dark matter detection, highlighting a data analysis inconsistency and proposing a correct method for interpreting such experimental results.

Contribution

It identifies a flaw in the data analysis of prior work and offers a straightforward approach to properly scale and interpret the experimental data.

Findings

The original constraint on ultra-low-mass axions was incompatible with the data duration.

A simple analysis method corrects the scaling issue in the experimental results.

The proposed approach improves the reliability of axion search constraints.

Abstract

We comment on arXiv:1901.10843, pointing out that its constraint on ultra-low-mass axions is incompatible with the duration of the data set described. We describe a simple way to analyze such data that gives the correct scaling.