TL;DR
This paper reviews recent developments in searching for low mass scalars at electron-positron colliders, highlighting new models and experimental strategies since previous reviews.
Contribution
It provides an updated overview of models and methods for detecting low mass scalars at Higgs factories, emphasizing recent progress.
Findings
Summarizes new theoretical models enabling low mass scalar detection
Discusses recent experimental strategies at $e^+e^-$ colliders
Highlights developments since previous reviews
Abstract
I briefly discuss the search for low mass scalars at Higgs factories as well as available models that render such scalars feasible, where I focus on new developments since the review presented in arXiv:2205.09687 (see also arXiv:2504.11969 for a recent update).
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