The XXVIII International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2021)

Dark-sector physics at Belle II

23 Aug 2021, 16:40

20m

ZR4

Dark Matter and Astroparticle Physics Dark Matter and Astroparticle Physics

Speaker

Sascha Simon Dreyer (Deutsches Elektronen-Synchrotron DESY)

Description

The Belle II experiment at the asymmetric $e^{+}{e}^{-}$ collider, SuperKEKB, is a substantial upgrade of the Belle/KEKB experiment. Belle II aims to record 50 ab${}^{-1}$ of data over the course of the project. During the first physics runs in 2018-2020, around 100 fb${}^{-1}$ of data were collected. These early data include specifically-designed low-multiplicity triggers which allow a variety of searches for light dark matter and dark-sector mediators in the GeV mass range.

This talk will present the very first world-leading physics results from Belle II: searches for the invisible decays of a new vector Z’, and visible decays of an axion-like particle; as well as the near-term prospects for other dark-sector searches. Many of these searches are competitive with the data already collected or the data expected in the next few years of operation.

Presentation materials

susy_darksectors_belleII_sdreyer.pdf