The Belle II experiment at the asymmetric $e^+e^-$ collider SuperKEKB is a substantial upgrade of the Belle experiment and aims at recording 50 ab$^{-1}$ of data over the next decade. During early physics operations, around 100 fb$^{-1}$ of data were collected. Specifically-designed low-multiplicity triggers enable a variety of searches for light dark matter and dark-sector mediators in the GeV mass range.
This report presents the very first world-leading physics results from Belle II from searches for the invisible decays of a non-standard model vector boson $Z^{\prime}$, and visible decays of an axion-like particle; as well as near-term prospects for other dark-sector searches.
Volume 380 -
Particles and Nuclei International Conference 2021 (PANIC2021) -
Dark Matter and Cosmology
Dark-sector physics at Belle II
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Pre-published on:
March 03, 2022
Published on:
May 24, 2022
Abstract
DOI: https://doi.org/10.22323/1.380.0047
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.