# Belle II

The Belle II detector
Event display with reconstructed tracks

## Project

The Belle II experiment is an upgrade of the B factory experiment Belle at the KEK laboratory in Tsukuba, Japan. It should record a 50 times larger data sample than the Belle experiment until 2022. With this one hopes to explain, among other questions, why the universe today consists only of matter and no anti-matter. Currently the detector and accelerator are upgraded. The expected large data sample also requires a new computing model to provide sufficient computing power and storage capacity for the processing and analysis of the data.

## Contribution of the ETP

The ETP is engaged in the Belle II project since 2008 on the fields of software development, setup of the computing infrastructure, and construction of the pixel vertex detector. In particular we work as a leading institute on the track reconstruction in the central drift chamber, the software framework, the code management, and the event display. Further activities are the development of a database for calibration constants and the monitoring of grid sites.

 Autor bzw. Beitrag des EKP Typ Titel Nummer und Download Baur, Anselm Bachelorarbeit ZMQ Implementation for a Reliable Parallel Processing Framework on the High Level Trigger at the Belle II Experiment ETP-BACHELOR-KA/2018-11 Ecker, Patrick Bachelorarbeit Study of Bremsstrahlung Finding at the Belle II Experiment ETP-BACHELOR-KA/2018-1 Eliachevitch, Michael Masterarbeit Tracking Performance Studies on Cosmic Rays and a Track Quality Estimation for the Central Drift Chamber of the Belle II-Experiment ETP-KA/2018-16 Gelb, Moritz Doktorarbeit Search for the Rare Decay $\mathrm{B}^+ \to \ell^+ \nu_{\ell} \gamma$ with the Full Event Interpretation at the Belle Experiment ETP-KA/2018-14 Racs, Sebastian Masterarbeit Track Quality Estimation and Defect Sensor Studies for the Silicon Vertex Detector of the Belle II-Experiment ETP-KA/2018-15 Keck, Thomas Doktorarbeit Machine learning algorithms for the Belle II experiment and their validation on Belle data ETP-KA/2017-31 Rupp, Joachim Bachelorarbeit Track Fitting Studies with multiple Hypotheses IEKP-BACHELOR-KA/2017-22 Schwab, Judith Masterarbeit Calibration of the Full Event Interpretation for the Belle and the Belle II Experiment ETP-KA/2017-27 Wagner, Jonas Masterarbeit Track Finding with the Silicon Strip Detector of the Belle II Experiment ETP-KA/2017-28 Weyland, Dennis Masterarbeit Continuum Suppression with Deep Learning techniques for the Belle II Experiment ETP-KA/2017-30