Open AccessDark Sector Physics with Belle II
Author(s) -
L. Corona
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1526/1/012031
Subject(s) - kekb , upgrade , luminosity , physics , collider , large hadron collider , particle physics , dark matter , nuclear physics , computer science , operating system , astrophysics , galaxy
The Belle II experiment at the SuperKEKB energy-asymmetric e + e − collider is a substantial upgrade of the KEKB facility at the Japanese KEK laboratory. The design luminosity of the machine is 8 · 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. From February to July 2018, the machine has completed a commissioning run, where about 0.5 fb −1 of data have been collected. Regular operation of SuperKEKB has started in March 2019: the machine has achieved a peak luminosity of 10 34 cm −2 s −1 , and Belle II has recorded a data sample of about 6.5 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 searches at LHC and dedicated low energy experiments. The Belle II dark matter analyses 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.