000002021 001__ 2021
000002021 005__ 20200722194900.0
000002021 037__ $$aBELLE2-TALK-CONF-2020-034
000002021 041__ $$aeng
000002021 088__ $$aBELLE2-TALK-DRAFT-2020-031
000002021 100__ $$aEnrico Graziani
000002021 245__ $$aDark Matter searches at Belle II
000002021 260__ $$a:13th International Workshop on the Identification of Dark Matter 2020$$c2020-07-22
000002021 300__ $$amult. p
000002021 520__ $$aThe Belle II experiment at the SuperKEKB energy-asymmetric $e^+ e^-$ collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The design luminosity of the machine is $8\times 10^{35}$ cm$^{-2}$s$^{-1}$ and the Belle II experiment aims to record 50 ab$^{-1}$ of data, a factor of 50 more than its predecessor. During 2018, the machine has completed a commissioning run, recording a data sample of about 0.5 fb$^{-1}$. Main operations started in March 2019 with the complete Belle II detector: an integrated luminosity of ~60 fb$^{-1}$ has been collected so far. These early data sets, with specifically designed low multiplicity triggers, offer already the possibility to search for a large variety of dark sector particles in the GeV mass range, complementary to LHC and to dedicated low energy experiments. The talk will review the status of the dark sector searches at Belle II, with a focus on the discovery potential of the early data, and show the first results.
000002021 8560_ $$fdavid.jaffe@desy.de
000002021 8564_ $$uhttps://docs.belle2.org/record/2021/files/BELLE2-TALK-CONF-2020-034.pdf