000002445 001__ 2445
000002445 005__ 20210621152847.0
000002445 037__ $$aBELLE2-TALK-CONF-2021-058
000002445 041__ $$aeng
000002445 088__ $$aBELLE2-TALK-DRAFT-2021-079
000002445 100__ $$aSavino Longo
000002445 245__ $$aDark sector searches at Belle II
000002445 260__ $$aPASCOS 2021$$c2021-06-14
000002445 300__ $$amult. p
000002445 520__ $$aThe Belle II experiment at the asymmetric $e^+e^-$ collider, SuperKEKB, is a substantial upgrade of the Belle/KEKB experiment. Belle II aims to record 50 ab$^{-1}$ of data over the course of the project. During the first physics runs in 2018-2020, around 100 fb$^{-1}$ of data were collected. These early data include specifically-designed low-multiplicity triggers which allow a variety of searches for light dark matter and dark-sector mediators in the GeV mass range. This talk will present the very first world-leading physics results from Belle II: searches for the invisible decays of a new vector Z’, and visible decays of an axion-like particle; as well as the near-term prospects for other dark-sector searches. Many of these searches are competitive with the data already collected or the data expected in the next few years of operation.
000002445 8560_ $$fdjaffe@bnl.gov
000002445 8564_ $$uhttps://docs.belle2.org/record/2445/files/BELLE2-TALK-CONF-2021-058.pdf