Working group of Prof. Dr. Ariane Frey

Our working group is deeply involved with the Belle II experiment in Japan, a cutting-edge research project in particle physics. Our focus is on analyzing the B-physics being studied in this experiment. We conduct detailed studies to understand the properties and behaviours of B-mesons, providing crucial insights into the fundamental forces and particles of the universe. Additionally, we work on accelerator studies to optimize the performance and efficiency of the experiment. A significant part of our efforts is the Vertex Detector Upgrade, where we test CMOS sensors to develop innovative technologies and methods that improve measurement precision and enhance the quality of experimental data.

• Student Project: Simulation of Irradiated TJ-Monopix2 Sensors - This project, part of a Bachelor's/Master's thesis or internship, involves simulating irradiated TJ-Monopix2 sensors and comparing results with test beam data. The goal is to model the sensor's response to radiation and validate it against experimental data, aiding in the optimization of radiation-hard pixel sensors.


• Bachelor Thesis: Test Beam Data Analysis for the Belle II Upgrade - The Belle II experiment is planning to deploy new fully monolithic CMOS pixel detectors (OBELIX) to enhance track reconstruction. This thesis focuses on analyzing test beam data from the predecessor sensor, TJ-Monopix2, collected at DESY, to study pixel response, efficiency, and spatial resolution. Students will gain experience with high-energy physics tools such as ROOT and Python, while learning the basics of detector development and experimental data analysis. The project provides an introduction to modern detector technologies and data processing.


• Bachelor Thesis: Analysis of Semileptonic B-Meson Decays - B-mesons exhibit various decay channels, including semileptonic decays such as B → D^** ℓ ν, where D^** represents an excited D-meson. The goal of this thesis is to determine branching ratios by studying selected decay modes. Students will learn methods of decay analysis in particle physics and gain experience with standard tools for data analysis.


• For inquiries about other thesis opportunities, please feel free to contact us.