Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 71 for “"ATLAS detector"”.
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TRACKING THE INVISIBLE. A SEARCH FOR SUPERSYMMETRIC HIGGSINOS WITH THE ATLAS DETECTOR.
… proton-proton collision data collected by the ATLAS detector during the LHC Run 2 and Run 3. The analyses target the production of charginos and neutralinos near the electroweak scale and with mass splittings in the range $0.3-1.5$ GeV. Owing to the small mass differences, the heavier …
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Searches for supersymmetric particles in leptonic final states with the ATLAS detector
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Search for exotic Higgs boson decays to four leptons with the ATLAS detector
… be well modeled with the standard simulation in ATLAS. The searches use proton-proton collision data collected with the ATLAS detector at the LHC with an integrated luminosity of $139\text{ fb}^{-1}$ and a center of mass energy $\sqrt{s}=13\text{ TeV}$. No significant excess has been observed. …
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Measurement of Higgs couplings to top quarks and τ leptons with the ATLAS detector
Since the discovery of the Higgs boson in 2012 during the first run of the Large Hadron Collider (LHC) at CERN, extensive measurements have been performed to characterize its properties. Its mass, spin, parity and couplings have been studied in detail with no significant deviations from the SM …
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Searches for Diboson New Physics and the L1Calo Software Development with the ATLAS Detector
… from LHC $\sqrt{s}=13~TeV$ collisions with the ATLAS detector with the data collected in 2015 and 2016 corresponding to an integrated luminosity of $36.1~fb^{-1}$. The searching strategy was performed with the Monte Carlo simulation for the SM background modelling and a data-driven method for …
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Searches for Higgs Boson Pair Production in the bbbb Final State with the ATLAS Detector
… final state using data collected by the ATLAS detector from proton-proton collisions at $\sqrt{s}=13$ TeV during the entirety of LHC Run 2 and at $\sqrt{s}=13.6$ TeV over a portion of Run 3. Three distinct analyses are detailed. The first analysis presents a search for scalar resonances …
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Measurement of Inclusive Isolated Prompt Photon Production at √s = 7 TeV with the ATLAS Detector
… of √s = 7 TeV. The data are collected with the ATLAS detector at the Large Hadron Collider, and correspond to 35 pb-1 of integrated luminosity. The measurement is made in four photon pseudorapidity (η) regions: 0 < |ηγ| < 0.6; 0.6 < |ηγ| < 1.37; 1.52 <|ηγ|< 1.81; and 1.81 <|ηγ|< 2.37; and …
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Measurement of the relative width difference of the B0 - B‾0 system with the ATLAS detector
… fb−1 of integrated luminosity collected by the ATLAS detector at the LHC in pp collisions at √s=7 TeV and √s=8 TeV is presented. The analysis described in this thesis incorporates results previously published by the ATLAS collaboration while providing greater detail and additional studies. The …
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Vertex based missing mass calculator for 3-prong hadronically decaying tau leptons in the ATLAS detector
In this thesis my personal contributions to the ATLAS experiment are presented, these consist of studies and analyses relating to tau leptons. The first main section contains work on the identification of hadronically decaying tau leptons, and my specific contribution the electron veto. This work …
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Investigations of initial state effects in p+Pb collisions via dijet measurement with the atlas detector
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-05-01
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Data-driven QCD background estimation to W production in association with jets using the ATLAS detector
… collisions at p s = 8 TeV recorded by the ATLAS experiment, corresponding to an integrated luminosity of approximately 18.9 ƒƅ⁻¹. It has been performed to extract the fraction of QCD events in the chosen phase space for the W boson production in association with jets. A data-driven …
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Beyond the standard model searches with b-jets and hadronically decaying τ-leptons with the ATLAS detector
… using 36.1 fb−1 of data collected by the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV during 2015 and 2016. The cross-section for non-resonant di-Higgs production is found to be 16.4 times the Standard Model prediction in the fully hadronic channel at a …
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Search for a charged Higgs Boson in proton-proton collisions at the LHC using the ATLAS detector
… using data recorded in 2011 and 2012 by the ATLAS detector at the LHC. The $H^{\pm}$ bosons are predicted by some extensions of the Standard Model (SM) that include multiple Higgs doublet fields, such as the Minimal Supersymmetric Standard Model. None of these searches has found evidence for …
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SEARCH FOR ELECTROWEAK PRODUCTION OF SUPERSYMMETRIC PARTICLES IN COMPRESSED MASS SPECTRA WITH THE ATLAS DETECTOR AT THE LHC
… nel centro di massa di 13 TeV con il rivelatore ATLAS presso LHC. Nella ricerca di chargini, la differenza di massa considerata tra i chargini e i neutralini è vicina alla massa del bosone W. In tale spazio fasi, la produzione di coppie di chargini è cinematicamente simile a quella del fondo …
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Azimuthal anisotropies of high-pT charged particles in Pb+Pb collisions at 5.02 TeV with the ATLAS detector
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Observation of the electroweak production of two same-sign W bosons in proton-proton collisions with the ATLAS detector
… found, at a significance of 4.5 and 2.0 by the ATLAS and CMS experiments respectively, during Run I of the Large Hadron Collider (LHC). Following this potential for discovery, this search was repeated in Run II of the LHC. The CMS experiment reported an observation of this process at a …
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Searches for Vector Like Quarks Decaying to Ht, Zt, or Wt in the Single Lepton Channel with the ATLAS Detector
… the full LHC Run 2 dataset, using the ATLAS detector. This search uses the event effective mass as a discriminating variable in a binned maximum likelihood fit. No significant excess of events is observed in the data above predicted background. Exclusion limits on the signal production …
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Measurement of the tt̅W and tt̅Z Cross Sections using Proton-Proton Collisions at √s = 8 TeV with the ATLAS Detector
… collisions at √s = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. Four different final states are considered: two opposite-sign leptons, two same-sign leptons, three leptons, and four leptons. The t t̅ W and t t̅ Z cross sections are simultaneously extracted using a …
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