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 21 for “"Particles (Nuclear physics)"”.
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Searching for Reactor Antineutrino Flavor Oscillations with the Double Chooz Far Detector
This dissertation presents results from a search for reactor antineutrinoₑ flavor oscillations using the Double Chooz Far Detector. The search was performed by observing the rate and energy spectrum of antineutrinoₑ interacting via Inverse Beta Decay in a Gd-doped liquid scintillator detector, and …
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Delta I Equals Three Halfs Kaon To Two Pion Decays Using Lattice Quantum Chromodynamics with Domain Wall Fermions
We calculate matrix elements for kaon to two pion decays in the 𝛥𝛪 = 3/2 channel using lattice gauge theory simulations. From these we can extract the decay amplitude 𝐴₂, for which the real part is related to the decay rate and can be compared to the experimental result Re(𝐴₂) = 1.484 x 10⁻⁸ GeV, …
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Quantum Chromodynamics with Eight and Twelve Degenerate Quark Flavors on the Lattice
… temperature (Nt = 32) and finite temperature physics are studied in this thesis. For system with eight flavors, the focus of the zero temperature simulations is on three values of input couplings β = 0.54, 0.56 and 0.58, with two or three quark masses for each coupling value. The …
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Mass levels of some elementary particles
The structure and mass levels of some elementary particles are presented. A non-relativistic bound state model has been used to describe the J \ψ and ψ' particles. The order of levels, 1S - 2P - 2S, as observed in the ψ, X, ψ’ spectroscopy is generally assumed. We introduce as interaction …
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Search for Excited Randall-Sundrum Gravitons with Semi-Leptonic Diboson Final States in 4.7 fb-1 of Proton-Proton Collisions using the ATLAS Detector at the Large Hadron Collider
This dissertation describes a search for resonant WW and WZ production in the lvjj decay channel using 4.701 fb-1 of sqrt(s) = 7 TeV LHC collision data collected by the ATLAS detector. Events with a single charged lepton, at least two jets and missing transverse energy are analyzed and no …
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Exact property estimation from diffusion Monte Carlo with minimal stochastic reconfiguration /
Our objective is to develop a diffusion Monte Carlo (DMC) algorithm to estimate the exact expectation values, ($o|^|^o), of multiplicative operators, such as polarizabilities and high-order hyperpolarizabilities, for isolated atoms and molecules. The existing forward-walking pure diffusion Monte …
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Measurement of single-top T-channel production using ATLAS data
This document reports the measurement of the single-top t-channel cross-section using data from the ATLAS detector, located at the Large Hadron Collider on the border of France and Switzerland. The data used were collected during the first half of 2011, from proton-proton collisions with a 7 TeV …
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Precision Lattice Calculation of Kaon Decays with Möbius Domain Wall Fermions
We report our recent development in algorithms and progress in measurements in lattice QCD. The algorithmic development includes the forecasted force gradient integrator, and further theoretical development and implementation of the Möbius domain wall fermions. These new technologies make it …
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Precision Search for Muon Antineutrino Disappearance Oscillations Using a Dual Baseline Technique
A search for short baseline muon antineutrino disappearance with the SciBooNE and MiniBooNE experiments at Fermi National Accelerator Laboratory in Batavia, Illinois is presented. Short baseline muon antineutrino disappearance measurements help constrain sterile neutrino models. The two detectors …
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Properties of Fragmentation Photons in p+p Collisions at 200 GeV Center-of-Mass Energy
The strong modification to the production of final state hadrons in heavy ion collisions is a key signature of the hot dense medium produced at energies achieved at the Relativistic Heavy Ion Collider (RHIC). Understanding the mechanisms for the parton energy loss responsible for these …
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Investigation into compactifed dimensions : Casimir energies and phenomenological aspects.
A central theme in this dissertation is the notion of the quantum vacuum. To a particle physicist, the term 'vacuum' means the ground state of a theory. In general, this ground state must obey Lorentz invariance, at least with regards to 3 spatial dimensions, meaning that the vacuum must look …
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Control study of two-particle correlations in heavy ion collisions at RHIC-PHENIX
… into the formation of a new state of dense nuclear matter called the Quark-Gluon Plasma (QGP) through the observation of jet quenching. However, the two-particle methodology has also shown to be biased towards di-jet production near the surface of the medium being created. Here, a detailed …
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Jet Quenching in Relativistic Heavy Ion Collisions at the LHC
Jet production in relativistic heavy ion collisions is studied using Pb+Pb collisions at a center of mass energy of 2.76 TeV per nucleon. The measurements reported here utilize data collected with the ATLAS detector at the LHC from the 2010 Pb ion run corresponding to a total integrated luminosity …
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A Measurement of the Jet Multiplicity in Di-lepton Final States of ttbar Events
A measurement of the jet multiplicity in di-leptonically decaying ttbar events (i.e. ttbar → (ee, μμ, eμ) + missing transverse momentum + jets) is presented, using 4.66 fb -1 of data collected from √ s = 7 TeV pp collisions at the CERN Large Hadron Collider. In order to mitigate the effects of …
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Jet quenching in Quark Gluon Plasma: flavor tomography at RHIC and LHC by the CUJET model
A new jet tomographic model and numerical code, CUJET, is developed in this thesis and applied to the phenomenological study of the Quark Gluon Plasma produced in Heavy Ion Collisions.
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Charged Particle Multiplicity and Open Heavy Flavor Physics in Relativistic Heavy Ion Collisions at the LHC
… For the charged particle measurements, charged particles are reconstructed with two algorithms (2-point "tracklet" and full tracking) from the pixel detector only. Measurements are presented of the per-event charged particle density distribution, dNch/d η and the average charged par- ticle …
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