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10.04.2018

The Belle II experiment is located at the e+ e− collider SuperKEKB at the High Energy Accelerator Research Organization (KEK) in Japan. Due to the operation mode of the collider, which aims for a new world record in luminosity, the online injected particle bunches create a high noise environment for...

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10.04.2018

For the commissioning phase of the upgraded accelerator SuperKEKB a special detector system (BEAST) substitutes the inner tracking system. It consists of several subdetectors and its purpose is to give feedback for the accelerator operation and monitor the background levels. One part of this BEAST...

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10.04.2018

The innermost tracking detector of Belle II is the Pixel Vertex Detector (PXD). It consists of 40 monolithic silicon modules arranged in two layers. The detector is developed and commissioned by a mostly European driven collaboration. The modules were processed at the Semiconductor Laboratory of the...

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10.04.2018

The main task of the tracking is the reconstruction of charged particles originating from primary and secondary vertices. Due to the present implementation of the tracking algorithms it is not possible to use the reconstructed hits of the first layer of the Pixel Vertex Detector when no hits are...

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10.04.2018

One of the goals of the Belle II experiment is the study of the CP asymmetries in the time evolution of the neutral B mesons. A clean laboratory to study the two-state system of B0 and anti-B0 mesons is provided by the Υ(4S) resonance which can be produced in e+ e− annihilation at the center of mass...

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05.04.2018

The track trigger of the Belle II experiment will include a z-vertex trigger based on neural networks, whose purpose is to determine the origin of tracks and to suppress background coming from outside the interaction point of the colliding beams. The commissioning phase of the experiment, which has...

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