000004183 001__ 4183
000004183 005__ 20240318145600.0
000004183 037__ $$aBELLE2-TALK-CONF-2024-038
000004183 041__ $$aeng
000004183 100__ $$aFabio Novissimo
000004183 245__ $$aPixel Vertex Detector background generation using Generative Adversarial Networks
000004183 260__ $$aDPG-Frühjahrstagungen 2024$$c2024-03-08
000004183 300__ $$amult. p
000004183 520__ $$aThe Pixel Vertex Detector (PXD) is the innermost detector of the Belle II experiment. Information from the PXD, together with data from other detectors, allows to have a very precise vertex reconstruction. The effect of beam background on reconstruction is studied by adding measured or simulated background hit patterns to hits produced by simulated signal particles. This requires a huge sample of statistically independent PXD background noise hit patterns to avoid systematic biases, resulting in a huge amount of storage due to the high granularity of the PXD sensors. As an efficient way of producing background noise, we explore the idea of an on-demand PXD background generator realised using Generative Adversarial Networks (GANs). In order to evaluate the quality of generated background we measure physical quantities which are sensitive to the background in the PXD.
000004183 6531_ $$aGenerative model
000004183 6531_ $$aGAN
000004183 6531_ $$aBelle II
000004183 6531_ $$aPXD
000004183 700__ $$aNikolai Hartmann
000004183 700__ $$aThomas Kuhr
000004183 8560_ $$ff.novissimo@physik.uni-muenchen.de
000004183 8564_ $$uhttps://docs.belle2.org/record/4183/files/BELLE2-TALK-CONF-2024-038.pdf