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ATLAS Theses

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2023-11-30
16:20
A search for long-lived neutral particles decaying to oppositely charged lepton pairs in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / Cote, Benjamin
A search for long-lived neutral massive particles decaying to an oppositely charged $\mu\mu$, $ee$, or $e\mu$ lepton pair is presented using 140 $\mathrm{fb}^{-1}$ of Run II proton-proton collision data at $\sqrt{s}=13$ TeV collected by the ATLAS detector at the LHC from 2015 to 2018 [...]
CERN-THESIS-2023-269 - 123 p.


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2023-11-29
17:57
Progress towards the first measurement of the Vcb element of the CKM matrix in semi-leptonic tt¯ decays / Roberts, Bryn Arthur
A method of measuring the |Vcb| element of the CKM matrix for the first time in tt decays using the ATLAS detector at the Large Hadron Collider is presented [...]
CERN-THESIS-2022-394 - 141 p.


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2023-11-24
12:02
Search for Higgs Boson Pair Production in the $b\bar{b}\tau^+\tau^-$ Final State with the ATLAS Experiment at the LHC / Deutsch, Christopher
A search for Higgs boson pair (HH) production in final states with two $b$ quarks and two $\tau$ leptons using 139 fb$^{-1}$ of proton-proton collision data at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the Large Hadron Collider (LHC) is presented [...]
CERN-THESIS-2023-253 -


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2023-11-14
09:46
Searches for CP Violation in the Higgs Sector with the $H \rightarrow ZZ^* \rightarrow 4l$ Decay Channel in the ATLAS Experiment at the Large Hadron Collider / Yang, Tianyi
Since the discovery of the Higgs boson at the Large Hadron Collider at CERN by the ATLAS and CMS experiments, measurements of its properties have been carried out [...]
CERN-THESIS-2023-240 -


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2023-11-10
14:42
/ Mekouar, Mohamed Reda
This memorandum reports the study of the light-by-light scattering process, γγ → γγ, in Pb+Pb collisions at the ATLAS experiment [...]
CERN-THESIS-2023-238 -


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2023-11-10
11:08
Neural Networks for Mass Regression for HH $\rightarrow$ bb$\tau\tau$ / Lin, Storm Feng
The value of the Higgs boson self-coupling is predicted by the Standard Model, but it is still largely unconstrained experimentally and thus being actively studied at the ATLAS experiment at the LHC [...]
CERN-THESIS-2023-237 - 40 p.


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2023-11-07
11:40
Non-linear effects in the ATLAS track-counting luminosity measurement / Gautam, Daniel Nikolas
In this thesis the linearity of the ATLAS track-counting luminosity measurement is studied using two different sets Monte Carlo simulated crossings of proton-proton bunches [...]
CERN-THESIS-2023-235 - 46 p.


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2023-10-31
18:42
Identification of highly boosted H → γγ decays with the ATLAS detector using deep neural networks / Hey, Nathaniel
This thesis introduces two jet tagging algorithms to identify highly boosted H → γγ decays using the ATLAS detector at the LHC [...]
CERN-THESIS-2023-226 -


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2023-10-31
11:28
Searching for chargino–neutralino pair production in $\sqrt{s}$ = 13 TeV $pp$ collisions with the ATLAS detector And telling people about it / Rye, Eli Baverfjord
The Standard Model of particle physics is undoubtedly one of the greatest triumphs of modern physics [...]
CERN-THESIS-2023-225 -


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2023-10-30
20:31
Observations of the Radiation Amplitude Zero effect and of the Diboson Longitudinal-Longitudinal Interactions in High $p$$_{T}$ Region using W±Z Production with the ATLAS Detector / Atmasiddha, Prachi
This thesis focuses on the studies of di-boson polarization states in W±Z production, presenting two novel measurements using pp collisions at a center-of-mass energy of $\sqrt{s}$ = 13 TeV [...]
CERN-THESIS-2023-223 - Ann Arbor, USA : U. Michigan, Ann Arbor, 2023-09-22. - 370 p.


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