The Belle II Experiment at SuperKEKB

I will describe the Belle II experiment and the SuperKEKB project under construction at the High Energy Accelerator Research Organization (KEK) in Japan. At this next-generation flavor factory, the Belle II detector will collect about 50 times more data than Belle, i.e., about 50~ab${}^{-1}$. This data set will permit us to search for evidence of new interactions and particles and to make more precise measurements of Standard Model properties such as $CP$ asymmetries in the decays of heavy mesons and leptons, including missing-energy decay modes such as $B \to \tau \nu$ that are inaccessible to the LHC experiments.