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ATLAS Theses

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2025-02-25
01:59
Search for Long-Lived Particles Decaying into Displaced Hadronic Jets in the Muon Spectrometer in $\textit{pp}$ Collisions at $\sqrt{s}=13$ TeV with the ATLAS Detector / Schott, Michael
A search for the decay of neutral, weakly-interacting, long-lived particles (LLPs) leaving a single displaced hadronic jet in the Muon Spectrometer (MS) using data collected by the ATLAS detector is presented in this dissertation [...]
CERN-THESIS-2025-006 - 238.


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2025-02-24
16:39
Disentangling Quantum Mechanics in Top Quark Pairs at the ATLAS Experiment / Reisch, Theresa
This thesis presents sensitivity studies for possible measurements of quantum entanglement and quantum discord in top quark pairs at $\sqrt{s}=13\,$TeV with the ATLAS experiment using simulations of proton-proton collisions corresponding to an integrated luminosity of $140\,\text{fb}^{-1}$ [...]
CERN-THESIS-2024-341 II.Physik-UniGö-MSc-2024/09. -


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2025-02-17
12:40
Unveiling the Higgs sector with tau-leptons: differential cross-section measurements and searches for lepton-flavor-violating decays with the ATLAS detector / Gomez Delegido, Antonio Jesus
The Standard Model (SM) of particle physics provides the theoretical framework for understanding fundamental particles and the forces that interact among them, with the exception of gravity [...]
CERN-THESIS-2024-334 - 2025 - 423.


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2025-02-12
18:44
Unfolding the top: Measuring the quantum interference between singly and doubly resonant top-quark production at $\sqrt{s} = 13$ TeV with the ATLAS detector / Loiacono, Eleonora
The production of top-quark pairs $t\bar{t}$ is extensively studied at the Large Hadron Collider (LHC) due to its importance in probing fundamental parameters of the Standard Model (SM) and its role as a background in various searches for physics Beyond the Standard Model (BSM) [...]
CERN-THESIS-2024-330 - 2024 - 184.


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2025-02-12
14:41
Constraining the 19D phenomenological Minimal Supersymmetric Standard Model with the ATLAS Experiment / Rasheed, Hammad
The Standard Model of elementary particles is a highly successful theory, but it has limitations, as it cannot explain gravity, dark matter, and other phenomena [...]
CERN-THESIS-2024-329 - 2024 - 244.


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2025-02-10
16:43
A Transformer and Novel Triggers for the Search for Higgs Boson Pair Production in the $b\bar{b}\tau^{+}\tau^{-}$ Final State with the ATLAS Detector / Rupnik Boero, Giovanni
The Higgs boson self-interaction is a direct probe of the shape of the Higgs potential, one of the last predictions of the Standard Model awaiting experimental confirmation [...]
CERN-THESIS-2024-328 - 2024 - 87 p..


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2025-02-09
20:25
Search for long-lived charginos based on a disappearing track signature in pp collisions at $\sqrt{s}$ = 13 TeV with the full Run-2 ATLAS data / Kaji, Toshiaki
Supersymmetry (SUSY) is one of the most attractive concepts of the standard model extension [...]
CERN-THESIS-2022-418 - 2022 - 143.


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2025-02-03
14:47
Development of the detector readout for the ATLAS Phase II ITk pixel detector / Alkakhi, Wael
During the HL-LHC upgrade, a high luminosity upgrade takes place, where the instantaneous luminosity will reach 7.5 x $10^{34} cm^{-2} s^{-1}$ in Run 4 [...]
CERN-THESIS-2025-004 ; II.Physik-UniGö-Diss-2024/06 - 2024 - 136.


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2025-02-01
17:07
Timing at the ATLAS detector: Challenges and Possibilities of Track-Time Association / Okkerman, Saskia
In the coming years the Large Hadron Collider (LHC) will be upgraded to run at an instantaneous luminosity of $5 \times 10^{34}\,\, \mathrm{cm^{-2}s^{-1}}$ compared to current Run 3's $2 \times 10^{34}\,\, \mathrm{cm^{-2}s^{-1}}$ [...]
CERN-THESIS-2024-324 - 2024 - 45.


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2025-01-30
15:55
Measurement of the vector boson production cross sections at $\sqrt{s}$ = 13.6 TeV with the ATLAS detector / Marinescu, Mihaela
The measurement of the inclusive $W^\pm$ and $Z$ boson production cross sections, and their ratios, are presented using 29 fb$^{-1}$ of $pp$ collision data at a centre of mass energy of $\sqrt{s}$ = 13.6 TeV, collected by the ATLAS detector at the Large Hadron Collider (LHC) [...]
CERN-THESIS-2024-321 - 2024 - 203 p..


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