Aachen 2019 – wissenschaftliches Programm
AKPIK 2.2: Vortrag
Dienstag, 26. März 2019, 16:10–16:20, H10
Photon position reconstruction using Machine Learning with the Belle II electromagnetic calorimeter — •Yu Hu — DESY Notkestraße 85 22607 Hamburg
The Belle II experiment at the SuperKEKB accelerator in Tsukuba, Japan is the successor to the B factory experiment Belle at KEKB. In 2018, the experiment completed its first run of commissioning collisions, and is currently preparing for physics data taking later in 2019. The electromagnetic calorimeter of the Belle II detector is mainly used to measure photons from the decays of B mesons. This talk will describe a new neural networks based photon position reconstruction algorithm. This can improve the photon position resolution, the photon position bias, and has an impact on the reconstruction of pi0 decays.