000002701 001__ 2701
000002701 005__ 20211004032110.0
000002701 037__ $$aBELLE2-PTHESIS-2021-017
000002701 041__ $$aeng
000002701 100__ $$aDmytro Levit
000002701 245__ $$aSearch for D+ → K- K0s π+ π+ π0 at the Belle Experiment and Development of the Read-Out System for the Pixel Detector of the Belle II Experiment
000002701 260__ $$aMünchen$$bTechnische Universität München$$c2019
000002701 300__ $$a201
000002701 500__ $$aPresented on 13 02 2019
000002701 502__ $$aPhD$$bMünchen, Technische Universität München$$c2019
000002701 520__ $$aThe thesis describes development of a read-out system of the pixel detector at Belle II and search for a rare D+decay in full data sample of Belle experiment. Channel D+ → K− K0s π+ π+ π0 is sensitive to new physics models that manifest themself in CP-violating isospin transition amplitudes ∆I = 3/2, which are prohibited in the standard model. This channel allows us to measure CP violation in the ∆I = 3/2 amplitude. I measured branching fraction with weak statistical significance 2σ, and therefore report a 95% upper exclusive limit on the branching fraction BF(D+ → K− K0s π+ π+ π0) < 7.23x10−5. In the second part of the thesis, I describe an FPGA-based read-out system for the DEPFET pixel detector of the new Belle II experiment. The system controls the pixel detector and processes its data as a stand-alone data acquisition system for detector development and characterization and as a high-performance read-out system at Belle II.
000002701 700__ $$aStephan Paul$$edir.
000002701 8560_ $$fdmytro.levit@kek.jp
000002701 8564_ $$uhttps://docs.belle2.org/record/2701/files/BELLE2-PTHESIS-2021-017.pdf
000002701 980__ $$aTHESIS