000002669 001__ 2669
000002669 005__ 20210910173223.0
000002669 037__ $$aBELLE2-TALK-CONF-2021-105
000002669 041__ $$aeng
000002669 088__ $$aBELLE2-TALK-DRAFT-2021-114
000002669 100__ $$aMartina Laurenza
000002669 245__ $$aDark sector physics at Belle II
000002669 260__ $$a22nd Particles and Nuclei International Conference$$c2021-09-05
000002669 300__ $$amult. p
000002669 520__ $$aThe Belle II experiment at the asymmetric e+e− collider, SuperKEKB, is a substantial upgrade of the Belle/KEKB experiment. Belle II aims to record 50 ab−1 of data over the course of the project. During the first physics runs in 2018-2020, around 100 fb−1 of data were collected. These early data include specifically-designed low-multiplicity triggers which allow a variety of searches for light dark matter and dark-sector mediators in the GeV mass range. This talk will present the very first world-leading physics results from Belle II: searches for the invisible decays of a new vector Z’, and visible decays of an axion-like particle; as well as the near-term prospects for other dark-sector searches. Many of these searches are competitive with the data already collected or the data expected in the next few years of operation.
000002669 8560_ $$fdjaffe@bnl.gov
000002669 8564_ $$uhttps://docs.belle2.org/record/2669/files/BELLE2-TALK-CONF-2021-105.pdf