Bonn 2020 – scientific programme

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AKPIK: Arbeitskreis Physik, moderne Informationstechnologie und Künstliche Intelligenz

AKPIK 2: AKPIK II

AKPIK 2.4: Talk

Thursday, April 2, 2020, 17:15–17:30, H-HS XII

Application of a CycleGAN to simulate calorimeter clusters in Belle II — •Cedric Ly for the Belle II collaboration — Desy, Hamburg, Germany

Belle II is a high precision electron-positron experiment located in Tsukuba, Japan. One goal of Belle II is to search for anomalies in the rare decays of B mesons. A very important part of Belle II analyses is the simulation of particles. A calibration sample could help to improve upon the simulation. It is especially challenging to get a calibration sample for low energetic photons, because it is difficult to validate this with real data. This talk will present a novel approach to generating calibration samples of photons in the electromagnetic calorimeter using cyclical generative adversarial networks (CycleGAN). CycleGAN prove to be a powerful model to do conversion between two unpaired supervised classes. By using control samples of real electrons in data with the trained CycleGAN, one may be able to obtain a calibration sample of *fake* data photons created from real electron clusters. The goal of the study is primarily to investigate the use of CycleGAN's in high-energy physics as an innovative new approach to generating data calibration samples of photons.