# EPS-HEP2019

Jul 10 – 17, 2019
Ghent
Europe/Brussels timezone

## Start of the Belle II Experiment at SuperKEKB: rediscovery of B Physics

Jul 11, 2019, 2:50 PM
20m
Campus Ledeganck - Aud. 6 (Ghent)

### Campus Ledeganck - Aud. 6

#### Ghent

Parallel talk Flavour Physics and CP Violation

### Speaker

Oskar Hartbrich (University of Hawaii at Manoa)

### Description

The 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. With this data set, Belle II will be able to measure the Cabibbo-Kobayashi-Maskawa (CKM) matrix, the matrix elements and their phases, with unprecedented precision and explore flavor physics with $B$ and charmed mesons, and $\tau$ leptons. Regular operations with the full detector have successfully started on March 25, 2019. In this presentation, we will review the status of the Belle II detector, and discuss the first results; these, while confirming known B Physics, prove the detector ability and the software readiness to reach the experiment’s goals.

### Primary authors

Ida Peruzzi (Laboratori Nazionali di Frascati dell'INFN) Oskar Hartbrich (University of Hawaii at Manoa)