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Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 82: Flavor-Tagging, Jet-Kalibration

T 82.3: Talk

Thursday, March 28, 2019, 16:30–16:45, S09

Track finding algorithm for the BelleII detector — •Thomas Lueck — LMU, Munich, Germany

BelleII is a multi-purpose detector which will collect data produced at the asymmetric e+e- collider SuperKEKB located in Japan. The goal of BelleII is to test the standard model (SM) of particle physics with measurements of unprecedented high precision. Possible contributions from physics beyond the SM can manifest theirselves as significant discrepancies among the SM predictions and the actual measurements. While BelleII already took data with a partially completed detector in 2018, the data taking with the full detector will start in early 2019. It is foreseen to collect a data sample corresponding to 50 ab−1 by 2025.

To achieve these physics goals it is required to have an efficient and precise track finding which has to cope with the higher background level at BelleII compared to its predecessors. The tracking devices of the BelleII detector consist of, from inner to outer, two layers of pixelated detectors, 4 layers of double sided strip detectors, and a drift chamber. In this contribution I will present the functionality and the performance of the BelleII track finding algorithms which reconstruct the tracks of charged particles in the tracking devices. These are direct input for the physics analyses.

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