Fakultäten der Universität Bonn: Suche
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Hybrid Pixel Readout Chip Verification, Characterization and Wafer Level Testing for the ATLAS-ITK Upgrade at the HL-LHC
(2023-07-04)
The HL-LHC upgrade starting in 2026 will provide an opportunity for new high-energy physics experiments, but also present challenges for its tracking detectors, particularly the pixel detectors close to the interaction ...
Searching for the Ashes of Dead Stars
(2023-08-08)
Hydrogen, helium, and trace amounts of lithium were formed during the Big Bang, but most other elements originally formed deep inside stars by the process of nuclear fusion. They were later scattered across the cosmos, ...
Using Advanced Machine Learning Techniques to Study Poorly Modeled Processes in pp Collisions with the ATLAS Detector
(2023-07-12)
In high energy particle physics, measurements are made to improve and test our models. Some processes are difficult or impossible to model with current capabilities. For some, this means that one would estimate such processes ...
Towards a measurement of the tHq process in channels with hadronic tau lepton decays
(2023-10-05)
This thesis presents the first study to find events of the rare tHq process with ATLAS data in channels with hadronically decaying τ. A baseline framework is developed to select as many signal events as possible in ...
Gravity Tests with Pulsars Using New-Generation Radio Telescopes
(2023-05-23)
Pulsar timing is a powerful tool for studying a wide range of questions in fundamental physics, including the equation of state (EOS) of super-dense matter, tests of general relativity (GR) and alternative theories of ...
Measurements of the mass and width of the W-boson, and test of lepton universality in W-boson decays with the ATLAS detector
(2023-04-20)
The Standard Model of particle physics serves as the predominant theory of the microscopic world for many decades. Many discoveries have been predicted by this model and it still provides a good fit for a wide variety of ......
Hadrons in a finite volume and in a background field
(2023-04-13)
In this cumulative thesis, we study various properties of hadrons in a finite volume. The motivation of this work is the following: The Quantum Chromodynamics (QCD) is a fundamental theory describing hadrons. The crucial ...
Control of Atoms in a High–Bandwidth Cavity for Quantum Nodes
(2023-02-13)
Optical cavities with coupled atoms are a promising platform as the nodes of future quantum networks, enabling interchange of information between single atoms and single photons. In particular, fiber-based high-bandwidth ...
Ultra-high field NMR spectroscopy of GABA in the human brain
(2023-08-31)
Magnetic resonance imaging (MRI) is a non-invasive and radiation-free imaging method that has been utilized in medicine for decades. Using magnetic fields, the nuclear spins within the tissue are perturbed, and the resulting ......
The dense interstellar medium and star formation across the nearby galaxies NGC 3627 and NGC 253
(2023-10-11)
The star formation process is an essential aspect of galaxy evolution. Observations of star-forming regions from sub-pc to kpc scales revealed a tight correlation between star formation and the emission of high-critical ...