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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 ...
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 ...