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ATLAS Theses

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A Gluon Transverse Momentum Dependent Parton Distribution Function Analysis using $J/\psi + \gamma$ Final State at $\sqrt{s}$ = 13 TeV With ATLAS / Tee, Amy
This thesis describes a study into Transverse-Momentum-Dependent (TMD) distributions of gluons inside a proton, through a $J/\psi$ meson plus $\gamma$ final state [...]
CERN-THESIS-2021-003 - 215 p.

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Aspects of Rare Production and Decay Processes of the Higgs Boson / Rauch, Daniel
The Higgs boson is the most recent fundamental particle to be experimentally observed [...]
CERN-THESIS-2020-262. - 2020. - 236 p.

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Development of an LHC model in BDSIM to study collimation cleaning and beam-induced backgrounds at ATLAS / Walker, Stuart Derek
The Large Hadron Collider (LHC) is at the frontier of high energy physics [...]
CERN-THESIS-2019-410 - 194 p.

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Higgs boson studies: associated production with a vector boson and decay into b-quarks using the ATLAS Run-2 dataset. / Spiteri, Dwayne Patrick
On the 4th July 2012, the Standard Model of Particle Physics received further validation with the discovery of the Higgs boson; ushering in a new age of Higgs physics [...]
CERN-THESIS-2021-002 - 372 p.

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Search for Standard Model Higgs bosons produced in association with top-quark pairs in ttH multilepton final states using the ATLAS detector at the LHC. / Delabat Diaz, Yasiel
This thesis describes the search for the associated production of a Higgs boson and a top-quark pair in proton-proton collisions with a center-of-mass energy of 13 TeV [...]
CERN-THESIS-2020-253 - 126 p.

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Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at the LHC / Chiu, Justin
This thesis presents the search for the dark sector process $h \rightarrow Z_d Z_d \rightarrow 4\ell$ in events collected by the ATLAS detector at the Large Hadron Collider in 2015--2018 [...]
CERN-THESIS-2020-252 - 174 p.

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Experimental studies on small diameter carbon dioxide evaporators for optimal Silicon Pixel Detector cooling / Hellenschmidt, Desiree
Since recent years the Large Hadron Collider at CERN and its experiments are the subject of upgrade programs, which are necessary to increase the foreseen collision rates and the amount of data to be gathered for the particle physics community in the future [...]
CERN-THESIS-2020-245 - : bonndoc Publication Server of Bonn University, 2020-12-18. - 269 p.

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Searches for new physics phenomena with jet final states in the ATLAS detector / Hansen, Eva Brottmann
Collimated sprays of particles, known as $jets$, are abundantly produced in high-energy proton-proton ($pp$) collisions, and predicted by many theories of physics beyond the Standard Model [...]
CERN-THESIS-2020-244 - 160 p.

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Detection and Identification of Electrons and Photons - Applications in the ATLAS Experiment, for the ATLAS ITk Detector and at the DESY II Test Beam / Arling, Jan-Hendrik
It is important to exploit particle detectors for the detection and identification of electrons and photons in the best possible way, as it is adressed in this thesis by discussing three different application examples of precisely measuring electrons and photons at high-energy physics andtest beam e [...]
CERN-THESIS-2020-243 DESY-THESIS-2020-022. - 395 p.

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A Search for Emerging Jets at sqrt{s} = 13 TeV at ATLAS Run 2 / Treado, Colleen Jennifer
A search is presented for emerging jets, new exotic objects arising in models with QCD- like hidden sectors where dark quarks undergo dark showering, yielding long-lived dark hadrons that subsequently decay to visible jets with multiple small and varyingly-displaced vertices within the jet cone [...]
CERN-THESIS-2020-242 - 434 p.

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