E-Dissertationen: Search
Now showing items 1-10 of 35
Search for a light charged Higgs boson in t → H±b decays, with H± → cs, in pp collisions at √s = 13 TeV with the ATLAS detector
(2026-03-03)
A search for a light charged Higgs boson produced in decays of the top quark, t → H±b with H with H± → cs, is presented. This is a direct search for new physics beyond the Standard Model of ......
Identification of hadronic τ decays using the τ lepton flight path and reconstruction and identification of jets with a low transverse energy at intermediate luminosities with an application to the search for the Higgs boson in vector boson fusion with the ATLAS experiment at the LHC
(2010-07-01)
Three studies of different components of the object reconstruction with the ATLAS experiment using simulated data are presented. In each study, a method for the improvement of the reconstruction is developed and the ...
Towards High Precision Measurements of Higgs Boson Properties in the Di-Tau Decay with the ATLAS Detector
(2025-01-28)
The Standard Model of particle physics (SM) describes the known fundamental particles and their interactions. The model is found to be incomplete with a need for extensions in order to cover all current experimental ...
3D-Silicon and Passive CMOS Sensors for Pixel Detectors in High Radiation Environments
(2020-10-30)
The future upgrade of the Large Hadron Collider to the High-Luminosity LHC demands new pixel detectors that can operate in environments with exceptionally high radiation. This requires investigations into new radiation-tolerant ...
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 ...
Development and Characterisation of Passive CMOS Sensors for Pixel Detectors in High Radiation Environments
(2022-10-07)
With the upgrade of the Large Hadron Collider (LHC) to the High-Luminosity LHC (HL-LHC), the instantaneous luminosity increases by a factor of five with respect to its design value from 2027. To keep the detectors at the ...
Measurement of the top quark decay branching fraction ratio Rb = B(t → Wb)/B(t → Wq) and of the inclusive production cross section pp → tt in the dilepton channel at ATLAS
(2022-01-13)
The top quark branching fraction ratio Rb and the inclusive production cross section σ tt̄ are measured in the dilepton channel using 4.6 fb-1 of proton-proton collisions at the centre-of-mass ...
Measurement of the Weak Mixing Angle and the Spin of the Gluon from Angular Distributions in the Reaction pp → Z/γ* + X → μ+μ- + X with ATLAS
(2013-11-15)
The measurement of the effective weak mixing angle with the ATLAS experiment at the LHC is presented. It is extracted from the forward--backward asymmetry in the polar angle distribution of the muons originating from $Z$ ...
Search for Supersymmetry with Hadronically and Leptonically Decaying Tau Leptons at the ATLAS Experiment
(2017-01-20)
The search for physics beyond the Standard Model (SM) is a central focus of modern particle physics. Supersymmetric extensions (SUSY) to the SM offer elegant solutions to many unresolved questions of the theory. This thesis ...
Study of a Light Standard Model Higgs Boson in the t¯tH0 Channel with ATLAS at LHC and Decay-Mode Independent Searches for Neutral Higgs Bosons with OPAL at LEP
(2004)
The production of a light Standard Model Higgs boson in association with a top-quark pair at the LHC is studied in a simulation of the ATLAS detector. The Higgs boson is assumed to decay into bb, and the top-quark pair to ......
