PoS - Proceedings of Science
Volume 449 - The European Physical Society Conference on High Energy Physics (EPS-HEP2023) - Joint T03+T10 Dark Matter + Searches for New Physics
Invisible ALPs at Belle II
F. Acanfora
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Pre-published on: February 13, 2024
Published on: March 21, 2024
We consider an axion-like particle coupled to the Standard Model photons and decaying invisibly at Belle II. We study the $e^+e^-+\text{invisible}$ channel and find that it has the potential to ameliorate the reach from the standard $\gamma+\text{invisible}$ channel for the whole ALP mass range. This is due to a significant Standard Model background suppression that we achieve via some dedicated kinematic variables.
DOI: https://doi.org/10.22323/1.449.0049
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