Faculties of University Bonn: Search
Now showing items 21-30 of 30
Search for Supersymmetry in Tau Lepton Final States with the ATLAS Detector
(2016-01-20)
In the search for signs of possible physics beyond the Standard Model, signatures with multiple tau leptons, jets and missing transverse momentum are promising candidates for a discovery. A search in this final state has ...
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 ...
Search for Squarks and Gluinos in τ-lepton Final States with the ATLAS Experiment
(2019-09-24)
Suche nach Squarks und Gluinos in τ-Lepton Endzuständen mit dem ATLAS Experiment
Das erfolgreiche und wohletablierte Standardmodell der Teilchenphysik ist in der Lage, die Mehrheit der beobachteten ...
Das erfolgreiche und wohletablierte Standardmodell der Teilchenphysik ist in der Lage, die Mehrheit der beobachteten ...
Higgs Boson Production Cross-Section Measurements in the Di-Tau Final State at ATLAS
(2022-04-07)
The origin of masses for massive elementary particles in the Standard Model (SM) is explained by the Higgs mechanism. With the discovery of a SM-like Higgs boson resonance in 2012 a variety of measurements have been conducted ......
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 ...
Confronting the R-parity-violating MSSM with Flavor Observables and Displaced Vertices
(2019-06-06)
Supersymmetry (SUSY) was proposed as one of the solutions to the hierarchy problem. In addition, R-parity (Rp) is often imposed in such models in order to e.g. avoid proton decay. These Rp -conserving ......
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 ...
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 ......
Search for Higgs Boson Pair Production in the bb̅τ+τ- Final State with the ATLAS Experiment at the LHC
(2023-12-18)
A search for Higgs boson pair (HH) production in final states with two b quarks and two τ leptons using 139 fb-1 of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded ...
Various Phenomenological Aspects of the R-parity Violating MSSM
(2024-02-05)
The Standard Model (SM) faces both theoretical and experimental challenges that indicate the existence of physics beyond its current framework. Among the proposed extensions, supersymmetry (SUSY) emerges as a promising ...