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.
Results
Showing 1 to 20 of 25 for “"Proton-Proton Collision"”.
-
Search for promptly decaying heavy neutral leptons in proton-proton collision events with trilepton final states using the CMS detector
Deze thesis presenteert twee analyses die zoeken naar tekenen van fysica buiten het standaardmodel, dat alle gekende deeltjes en hun interacties op het meest fundamentele niveau beschrijft. Hoewel experimenteel bewijs heeft aangetoond dat de theorie enorm robust is, heeft het ook aangetoond dat het …
-
A Search for the H mm Decay and a Measurement of the Mass of the Higgs Boson using H- 4l Events with 139 fb-1 of Proton-proton Collision Data Collected by the ATLAS Experiment
Using a dataset collected with the ATLAS detector during run-2 of the Large Hadron Collider, a search for the decay of the Higgs boson to two muons and a measurement of its mass are presented. Common to both measurements, an overview of the theoretical background, the Large Hadron Collider, the …
-
Measurement of the top quark mass from top quarks produced in proton-proton collisions at √s = 13 TeV that decay to dimuons via a J/ψ
… using tt → lepton + J/ψ(→ µ +µ −) events, using proton-proton collision data collected by the ATLAS detector at a centre-of-mass energy of √ s = 13 TeV, during 2015-2018. The data corresponds to a total integrated luminosity of 139.0 fb−1 . This lepton + J/ψ channel is statistically limited due …
-
Measurement of top-antitop differential cross sections in the di-lepton channel with ATLAS in p-p collisions at 7TeV
… of the top quark pairs using $\sqrt{s} = 7 \TeV$ proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider. This data corresponds to an integrated luminosity of \lumitot. Events with top quark pair signatures are selected in the di-lepton channel. The reconstructed …
-
Search for exotic Higgs boson decays to four leptons with the ATLAS detector
… 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. Therefore, this …
-
Search for new phenomena using three-photon final states in data collected with the ATLAS detector at the Large Hadron Collider
… during the run period from 2015 to 2018. The proton-proton collision center-of-mass energy was 13\,TeV and the corresponding integrated luminosity recorded by the ATLAS detector was $139\,{\rm fb^{-1}}$. </p>
-
Improved Search for Heavy Neutral Scalars A and H Using ttZ Events from 13 TeV pp Collisions at CMS
… of the top quarks. The search is performed using proton-proton collision data recorded by the CMS experiment at sqrt(s) = 13 TeV during LHC Run 2, corresponding to an integrated luminosity of 138 fb^-1. The analysis targets events with three charged leptons, missing transverse momentum, and four …
-
Searching for the Higgs Boson Produced in Association with a Pair of Top Quarks in Multilepton Final States Using the ATLAS Detector at the LHC
… An integrated luminosity of 36.1 fb−1 of proton-proton collision data was used, collected during 2015 and 2016 at a centre-of-mass energy of √s = 13 TeV with the ATLAS detector at the LHC. The specific final state studied in this thesis is the 3l+1τ channel which includes three light …
-
Search for Magnetic Monopoles and Stable High-Electric-Charge Objects in 13 TeV Centre-of-Mass Energy Proton-Proton Collisions with the ATLAS Detector at the LHC
… to 4000 GeV. It is performed with 137 fb −1 of proton-proton collision data at a centre-of-mass energy of 13 TeV, collected during 2015 – 2018 with the ATLAS Detector at the Large Hadron Collider. No deviation from Standard Model predictions are observed, thus exclusion limits are placed on …
-
Search for dark matter produced in association with a Higgs boson decaying to two photons in proton-proton collisions at 13 TeV with the CMS detector
… with a Higgs boson decaying to two photons in proton-proton collision data collected at a center-of-mass energy of 13 TeV. The search is based on data collected in 2015 and 2016 by the CMS experiment at the CERN Large Hadron Collider. The analyzed data correspond to an integrated luminosity of …
-
A search for tWZ production at the ATLAS experiment
… for tWZ production using 140 fb−1 of √ s=13 TeV proton-proton collision data measured using the ATLAS detector. The search targets the trilepton and tetralepton final states, where regions were defined using physics object multiplicities. Graph neural networks were employed to perform …
-
Observation and measurement of a standard model Higgs Boson-like diphoton resonance with the CMS detector
… CMS detector during 2011 and 2012, consisting of proton-proton collision events at [square root of] s = 7 TeV with L = 5.1 fb-1 and at [square root of] s = 8 TeV with L = 19.7 fb-1, with the final calibration. In particular, an excess of events above the background expectation is observed, with a …
-
Measurement of the Drell--Yan differential cross section with the CMS detector at the LHC
… our understanding of the structure of the proton. The results are based on proton-proton collision data at √<em>s</em> = 7 and 8\TeV recorded with the Compact Muon Solenoid detector at the CERN Large Hadron Collider during the first years of operation. Measurements of the differential …
-
Studies of rare B-meson decays to muons at the LHCb experiment
… of b- and c-hadrons produced in high energy proton-proton collisions at the Large Hadron Collider. This is in order to test the predictions of the Standard Model of particle physics, search for indirect evidence for new physics beyond the Standard Model and search for new sources of CP …
-
Targeting Natural Supersymmetry With Top Quarks
… (stops) with the ATLAS experiment, using 13 TeV proton-proton collision data delivered by the Large Hadron Collider. A range of models is considered where the stop may decay to top quarks, b jets, and a variety of other supersymmetric particles. Stop masses as large as 950 GeV are excluded at 95% …
-
Building the Future: HL-LHC ATLAS Upgrades and Event-Topology-Based Principles to Search for New Physics with Missing Transverse Momentum
… for gluino-pair production in $140~\fb$ of proton proton collision at $\sqrt{s}=13~\textrm{TeV}$ with the ATLAS detector. Direct comparison with model-specific search strategies are performed, where comparable results can be achieved in most of the mass space with major improvements in …
-
Determination of the CKM ratio $|V_{ub}|/|V_{cb}|$ using semileptonic $B_c^{+}$ decays at LHCb
… \to D^{(*)0}\mu^+ \nu_{\mu}$ decays using proton-proton collision data collected by the LHCb experiment operating at the Large Hadron Collider at CERN. The measurement makes use of a data sample collected between 2016 and 2018 at a centre-of-mass energy of 13 TeV, corresponding to an …
-
A search for tWZ production in the trilepton channel using Run 2 data from the ATLAS experiment
… events containing three leptons from 136 fb−1 of proton-proton collision data, with a centre of mass energy of 13 TeV, recorded by the ATLAS detector between 2016 and 2018. The aim of the analysis was to search for evidence of a top quark produced in association with a W boson and a Z boson (tWZ). …
-
A Search For Wino Pair Production With B − L R-Parity Violating Chargino Decay To A Trilepton Resonance With The Atlas Experiment
… particles. These analyses are performed using proton-proton collision data from the Large Hadron Collider (LHC) collected by the ATLAS experiment. The B − L Minimal Supersym- metric Standard Model predicts that these superpartners will have small R-parity violating couplings and the lightest …
-
TRACKING THE INVISIBLE. A SEARCH FOR SUPERSYMMETRIC HIGGSINOS WITH THE ATLAS DETECTOR.
… particles with compressed mass spectra using 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 …
Page 1 of 2