000001748 001__ 1748
000001748 005__ 20191015045058.0
000001748 037__ $$aBELLE2-TALK-CONF-2019-147
000001748 041__ $$aeng
000001748 088__ $$aBELLE2-TALK-DRAFT-2019-139
000001748 100__ $$aE. Graziani
000001748 245__ $$aSearch for dark matter with early Belle II data
000001748 260__ $$aBeauty 2019$$c2019-10-02
000001748 300__ $$amult. p
000001748 500__ $$a20 min
000001748 520__ $$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 8×10^35 cm−2s−1 and the Belle II experiment aims to record 50 ab−1 of data, a factor of 50 more than its predecessor. From February to July 2018, the machine has completed a commissioning run; regular operation of SuperKEKB has started in March 2019: the machine has achieved a peak luminosity of 10^34 cm−2s−1, and Belle II has recorded a data sample of about 7 fb−1. Already this early data set with specifically designed triggers offers the possibility to search for a large variety of dark sector particles in the GeV mass range complementary to LHC and dedicated low energy experiments; these searches will benefit from more data in the process of being accumulated. This talk will review the state of the dark sector searches at Belle II with a focus on the discovery potential of the early data, and show the first results
000001748 8560_ $$fdoris.yangsoo.kim@desy.de
000001748 8564_ $$uhttps://docs.belle2.org/record/1748/files/BELLE2-TALK-CONF-2019-147.pdf