Browsing Dissertations & Theses by Title
Now showing items 125-144 of 164
-
Search For The Standard Model Higgs Boson In eτ Final States
(Physics, 2013-07-22)Presented in this dissertation is a search for the standard model (SM) Higgs boson using the DØ detector at Fermilab in Batavia, IL. The SM is a fantastically accurate theory describing the fundamental interactions and ... -
Searches for Supersymmetric Particles with the ATLAS Detector using Boosted Decay Tree Topologies
(2016-08-05)The existence of a scalar Higgs particle poses a challenge to the Standard Model through an unnatural hierarchy problem with quadratic divergence. A supersymmetric framework, proposing heavy partners to every Standard Model ... -
Searches For The Exclusive Higgs and the Charged Higgs Bosons with the ATLAS Detector at the LHC
(2016-12-06)In this thesis, searches for the exclusive Standard Model (SM) and charged hMSSM Higgs bosons are performed. While observations of the SM Higgs boson in 2012 by ATLAS and CMS collaborations were ground-breaking, several ... -
Searching for a Pair-Produced Supersymmetric Top Partner Using Recursive Jigsaw Variables and Boosted Decision Trees with 139 fb⁻¹ of Data From the ATLAS Detector
(2020-07-21)The Standard Model of Particle Physics is the most comprehensive theory describing how fundamental particles and three of the four fundamental forces are related. However, the Standard Model is known to be an incomplete ... -
Searching For Dark Matter In Neutrino Beams
Dark Matter detection is currently a major area of interest for research. For the past 45 years many ideas and experiments have been investigated to explain the existence of and to detect Dark Matter. Since these experiments ... -
Selected Studies Of Celestial Dynamics And Habitability Of Extra Solar Planetary Systems
(Physics, 2013-03-20)Planetary science in various forms has become interwoven into human culture during all of known human history. The need and desire to expand our horizons has brought humans from basic forms of observation to the development ... -
Selected Studies Of Orbital Stability And Habitability In Star-planet Systems
(Physics, 2011-03-03)The study of planets remaining in orbit around one star with another starinterfering is an important topic of orbital mechanics and astrobiology. The onset of instability for a planet which is part of a stellar binary ... -
Self-Consistent Effects of the Recirculating Plasmapshere on the Development of Storm Time Dynamics in the Inner Magnetosphere.
(2023-06-07)The near Earth space environment is a highly coupled system. The Interplanetary Magnetic Field (IMF) interacts with the magnetosphere in myriad ways depend on the orientation of the IMF to the magnetosphere. The magnetic ... -
Semi-empirical Studies Of Solar Supergranulation And Related Phenomena
(Physics, 2008-09-17)In recent years, solar observations have moved from ground-based telescopes to observatories on Earth orbiting satellites, such as SOHO. They provide us with a clear and uninterrupted view of the solar disk. One instrument ... -
Sensitivity Study for Low Mass Dark Matter Search at DUNE
Many anomalies in the predictions of mass and gravity at the galactic scale have been attributed to an elusive form of matter we refer to as dark matter. The excessive rotational velocity of galaxies and gravitational ... -
Silicon Carbide At Nanoscale: Finite Single-walled To "infinite" Multi-walled Tubes
(Physics, 2013-03-20)A systematic ab initio study of silicon carbide (SiC) nanostructures, especially finite single-walled, infinite double- and multi-walled nanotubes and nanocones is presented. Electronic and structural properties of all ... -
Silicon Carbide Nanotubes: Promises Beyond Carbon Nanotubes
(Physics, 2008-09-17)First-principles calculations for the electronic and geometric structures of three different types of armchair and zigzag silicon carbide nanotubes from (3, 3) to (11, 11) and (3, 0) to (11, 0) have been performed using ... -
Simulations Of High-latitude Ionosphere-magnetosphere region plasma density structures and the Alfvén waves effects
(Physics, 2009-09-16)O+ density structures in the polar cap ionosphere-magnetosphere region near 6000 km altitude have been observed with numerous spacecraft, with O+ densities ranging from above 10 cm-3 to lower than 0.01 cm-3. Regions with ... -
Spin Coupling By Conduction Electrons Explored By Double Time Green's Functions
(Physics, 2013-03-20)The impurities containing unfilled d or f shells may have localized magnetic moments in nonmagnetic metals, semiconductors, and superconductors under certain conditions. These localized moments interact with each other ... -
Strong Constraints on New Physics from the IceCube South Pole Neutrino Observatory
(2022-12-12)The IceCube Neutrino Observatory, a gigaton-scale ice Cherenkov detector located deep within the Antarctic glacier, has detected hundreds of thousands of atmospheric neutrinos at energies from a few GeV to 100 TeV. Above ... -
STUDIES OF INFLUENCE OF ENERGY DISTRIBUTION ON THE UPPER ATMOSPHERE
(2015-11-30)The energy inputs into the upper atmosphere including both solar irradiation and geomagnetic energy can significantly change the upper atmosphere such as the neutral and plasma densities, velocities and temperatures. ... -
A Study Of Ejection Times Of Terrestrial Planets From The Habitable Zones Of The Solar Twins Hd 20782 And Hd 188015
(Physics, 2009-09-16)We provide a detailed statistical study of the ejection of Earth-mass planets from the habitable zones of the solar twins HD 20782 and HD 188015. These systems possess a giant planet that crosses into the stellar habitable ... -
Study Of Jet And Missing Transverse Energy Performance In Dijet Events With ATLAS Data
(Physics, 2012-04-11)The Large Hadron Collider(LHC) is the world's largest particle collider at CERN, Geneva, operating at a center of mass energy of 7 TeV . The Toroidal LHC Apparatus (ATLAS)is one of two general purpose detectors at the LHC. ... -
Study Of Oxide Surfaces Using Time Of Flight Positron Annihilation Induced Auger Electron Spectroscopy
(Physics, 2007-08-23)Transition metal oxides (TMOs) exhibit a rich collection of interesting and intriguing properties which can be used for wide variety of applications. In this dissertation, I will discuss the first PAES measurements on ... -
Study Of The Response Of The ATLAS Tile Calorimeter To Muons Produced In Sqrt(s) = 7 Tev Proton-proton Collisions At The LHC
(Physics, 2011-10-11)The purpose of this study is to verify the inter-calibration of the cells and uniformity of the Tile Calorimeter (TileCal) detector in the ATLAS experiment at CERN. The response using muons produced in proton-proton ...