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Searching for neutrinoless double-beta decay of germanium-76 in the presence of backgrounds
(2013-04-17)
The neutrino, an elementary particle, has been the subject of experimental investigation for over 50 years. Recent experiments have shown that neutrinos have mass and oscillate, but questions about fundamental properties of the neutrino remain. The observation of neutrinoless double-beta decay could determine whether lepton ...
A test of the gravitational inverse-square law at short distance
(2013-11-14)
Proposed theories that unify gravity and quantum mechanics often require Newton's gravitational inverse-square law to fail below some length scale. Additionally, some theorists have proposed the discovery of Dark Energy may imply altered gravitational dynamics at short length scales. These facts motivated our previous and ...
A Search for the Neutral Higgs Bosons of the Minimal Supersymmetric Standard Model with the ATLAS Detector at the Large Hadron Collider
(2013-11-14)
A search for the neutral Higgs bosons of the Minimal Supersymmetric Standard Model (MSSM), produced in proton-proton collisions recorded by the ATLAS detector, is pre- sented. The data correspond to an integrated luminosity of 20.3 fb<super>-</super> , with a center of mass energy of 8 TeV. The search focuses on final states ...
Search for Weakly-interacting Long-lived Particles in Proton-Proton Collisions at sqrt(s) = 8 TeV with the ATLAS Detector
(2013-07-25)
A search for the decay of a light Higgs boson to a pair of weakly-interacting, long-lived particles in 20.8 fb-1 of proton-proton collisions at sqrt(s) = 8 TeV recorded in 2012 by the ATLAS detector is presented. The strategy requires that both of the long-lived particles decay just before or inside the hadronic calorimeter. ...
A SQUID-Based RF Cavity Search for Dark Matter Axions
(2013-07-25)
The axion is a hypothetical elementary particle resulting from a solution to the “Strong-CP” problem. This serious problem in the standard model of particle physics is manifested as a 10<super>10</super> discrepancy between the measured upper limit and the calculated value of the neutron's electric dipole moment. Furthermore, ...
Use Deuterium Solid State NMR Simulations to Study Dynamics of Peptides Adsorbed onto Inorganic Surfaces
(2013-04-17)
This work is directed towards building an understanding of the dynamics of protein/peptide adsorbed on inorganic surfaces. Deuterium solid state NMR(SSNMR) is a very special tool for probing molecule dynamics in solid state. The probing of dynamic information is realized by simulation of the Deuterium line shape and relaxation ...
Biological nanopore MspA for DNA sequencing
(2013-07-25)
Unlocking the information hidden in the human genome provides insight into the inner workings of complex biological systems and can be used to greatly improve health-care. In order to allow for widespread sequencing, new technologies are required that provide fast and inexpensive readings of DNA. Nanopore sequencing is a ...
The Dynamics of the Unitary Fermi Gas
(2013-11-14)
This dissertation is concerned with the dynamics of dilute Fermi gases in the unitary regime with short-range interaction and infinite scattering length. This work represents the first ab- initio simulation of quantized vortex generation and domain walls generation. In addition, the interaction of quantized vortices and domain ...
Karlsruhe Tritium Experiment: Detector System Commissioning and In-Situ PIN-Diode Array Dead-Layer Measurement
(2013-07-23)
The <underline>Ka</underline>rlsruhe <underline>Tri</underline>tium <underline>N</underline>eutrino (KATRIN) experimental goal is to measure the neutrino mass to 0.2 eV sensitivity at the 90 percent confidence level. This is an order of magnitude more sensitive than the two most recent direct neutrino mass measurements. The ...
Nuclei as Probes of Meson-Nucleon Interactions at High and Low Energy
(2013-07-23)
This dissertation explores two main topics: 1) Color Transparency and quasi-elastic knockout reactions involving pions and &rho mesons; and 2) determination of the J/&psi-nucleon scattering amplitude and scattering length via J/&psi electroproduction on the deuteron. It is shown that at the energies available at the COMPASS ...