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 366 for “"Collider"”.
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Collider phenomenology of heavy neutrinos
… mass in the Electroweak scale at the high energy colliders. Based on a simple realization of inverse seesaw model we fix the model parameters to reproduce the neutrino oscillation data and to satisfy the other experimental constraints. We assume two flavor structures of the model and the different …
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Calorimetry at a Future Linear Collider
… the optimisation of the calorimeter design for collider experiments at the future Compact LInear Collider (CLIC) and the International Linear Collider (ILC). The detector design of these experiments is built around high-granularity Particle Flow Calorimetry that, in contrast to traditional …
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Crabbing System for an Electron-Ion Collider
… push further the boundaries of knowledge using colliders, there is an imperative need, not only to increase the colliding beams’ energies, but also to improve the accuracy of the experiments, and to collect a large quantity of events with good statistical sensitivity. To achieve the latter, it …
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Final Muon Cooling For A Muon Collider
… of particle accelerators is needed. Muon colliders are a promising alternative if muon cooling can be made to work. Muons are 200 times heavier than electrons, so they produce less synchrotron radiation, and they behave like point particles. However, they have a short lifetime of 2.2 μs …
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MAPS calorimetry for a future linear collider
The International Linear Collider (ILC) is intended to be a new high precision electron-positron collider operating at the TeV scale. The studies detailed within this thesis deal primarily with the development of Monolithic Active Pixel Sensors (MAPS) which could be used as the sensitive component …
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Accuracy and precision in collider event shapes
… the extremely complicated data from each collider event into one number. Using eective theories and studying the appropriate limits, it is possible to probe the underlying physics to a high enough precision to extract interesting information from the experimental results. In the initial …
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Machine Learning for High-Energy Collider Physics
Fundamental physics, in particular high-energy collider physics, seeks to understand the natural world at the smallest scales, leading experimentally to the creation of large, complex datasets. Machine learning comprises a powerful set of statistical and computational tools enabling comprehensive …
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Jet substructure at the Large Hadron Collider
In this thesis, we use the CMS Open Data to study the 2-prong substructure of jets. We use CMS's particle flow reconstruction algorithm to obtain jet constituents, which we then use to perform various jet substructure studies. After validating our basic kinematics and substructure results through a …
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Ion Bunch Formation Strategies for the JLEIC Collider
<p>An Electron-Ion Collider (EIC) has been proposed and supported as the next major nuclear physics facility in the United States, with very high design luminosities of 10<sup>33</sup> − 10<sup>34</sup> cm<sup>−2</sup> s<sup>−1</sup>. The Jefferson Lab EIC concept, JLEIC, includes construction of a …
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Novel Networks in Collider Searches for New Physics
Beyond-Standard Model (BSM) physics searches at the LHC are limited by the amount of information available to distinguish a new physics process from its backgrounds. Analyses apply a range of classification algorithms to obtain sensitivity to rare signals, but are challenged to obtain enough …
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Detectors and Physics at a Future Linear Collider
An electron-positron linear collider is an option for future large particle accelerator projects. Such a collider would focus on precision tests of the Higgs boson properties. This thesis describes three studies related to the optimisation of highly granular calorimeters and one study on the …
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Anomaly Detection in Collider Physics via Factorized Observables
… maximize the discovery potential of high-energy colliders, experimental searches should be sensitive to unforeseen new physics scenarios. This goal has motivated the use of machine learning for unsupervised anomaly detection. In this paper, we introduce a new anomaly detection strategy called …
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Simulation of signal and background processes for collider experiments
… processes as they are studied at high-energy collider experiments. Special attention is thereby given to an accurate simulation of multi-particle final states that are expected to constitute the key signatures for the existence of physics beyond the Standard Model of particle physics.
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Electro-Optic Diagnostic Techniques For The CLIC Linear Collider
One of the most promising devices to provide accurate measurement of the longitudinal bunch profile at the tens of femtosecond level is based on electro-optic techniques. In this thesis, a bunch profile monitor, based on electro-optic spectral decoding (EOSD), is currently developed for the CLIC …
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Searches for New Physics at the Large Hadron Collider
… of particle physics analyses at the Large Hadron Collider, including both tried-and-true supervised machine learning methods and also cutting edge novel unsupervised machine learning methods that are in development. It also contains three published studies, and another study that is in progress, …
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Crab Cavity Requirements for the Jefferson Lab Electron-Ion Collider
<p>An Electron-Ion Collider (EIC) has been proposed to be the next large facility to explore the dynamics of quarks and gluons inside nuclei. A conceptual design for a Jefferson Lab Electron-Ion Collider (JLEIC) is being developed. It is based on the CEBAF 12 GeV machine as a full energy electron …
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Design Of A High Luminosity 100 Tev Proton Antiproton Collider
… physics is being explored with the Large Hadron Collider at CERN and with Intensity Frontier programs at Fermilab and KEK. The energy scale for new physics is known to be in the multi-TeV range, signaling the need for a future collider which well surpasses this energy scale. A 10 34 cm-2 s-1 …
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Precision Physics with W-bosons at the Large Hadron Collider
Weak bosons are by now a well-established and observed block of the elementary particles table, but the era of Precision Physics opens up new ways of utilising them in an attempt to uncover the mystery of physics beyond the Standard Model. Being central to what is called Electroweak Symmetry …
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Light (anti)nuclei production with ALICE at the Large Hadron Collider
… The production rate at the CERN Large Hadron Collider (LHC) for deuterons is approximately one every one thousand p–Pb collisions corresponding to a charged-particle density of about 20. The production rate of heavier nuclei, such as 3He, is even lower (one every one million events). Hence, …
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