Browsing Physics by Title
Now showing items 215-234 of 291
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Radiative Models of Sagittarius A* and M87 from Relativistic MHD Simulations
(2011-07)The discovery that the magnetorotational instability (MRI) is likely the mechanism of angular momentum transport and accretion has led to rapid progress in the theory of black hole accretion. General relativistic MHD ... -
Real-Time Core-Hole Dynamics in X-ray Spectroscopy
While experimental developments have enabled the study of core-hole dynamics in X-ray spectroscopy, theoretical methods for dynamical effects are still underdeveloped. Additionally, traditional theoretical methods are in ... -
Recent Progress in Quantum Gravity: Karch-Randall Braneworld, Entanglement Islands and Graviton Mass
In this thesis, we review important recent progress in our understanding of entanglement islands and quantum gravity. We illustrate the concept of entanglement island and its implications to the black hole information ... -
Reduced Limit on the Permanent Electric Dipole Moment of 199 Hg
This thesis describes an experiment to measure the permanent electric dipole moment (EDM) of 199Hg. The EDM is manifested as a small perturbation to the Larmor precession frequency due to the interaction energy of the ... -
Relative Cross Section Measurment of Inclusive Charged Current Multiple Pion Production to Inclusive Charged Current from Muon Neutrinos at the Near Detector of the T2K Experiment
The Tokai-to-Kamiokande (T2K) experiment is an off-axis, long baseline neutrino oscillation experiment based in Japan. One of the largest sources of systematic uncertainty in the oscillation analysis is the uncertainty on ... -
Research on student understanding of quantum mechanics as a guide for improving instruction
(2007)This dissertation reports on an investigation of student understanding of topics in quantum mechanics that are at a level appropriate for the third year of undergraduate study. Initially, the focus was on student ability ... -
Results from a 3.1 kg day Target Exposure with Skipper CCDs from DAMIC at SNOLAB and other Beyond the Standard Model Searches with Semiconductor Detectors
We present here progress on a dark matter (DM) and neutrionless double beta decay (\nldbd) experimental search. We constrained the WIMP-nucleon scattering cross section $<9 \ \rm GeV / c^2$ in a silicon target with an 11 ... -
Reversibility of Sea Ice and Climate under Global Change
(2012-09-13)We present work on several topics in physical climatology. Motivated by recent satellite observations of Arctic sea ice age, we investigate how the properties of first-year and multiyear ice regulate sea ice area and volume. ... -
Rotating Torsion Balance Tests of the Weak Equivalence Principle
We used a rotating torsion balance to make the most precise laboratory search for equivalence-principle violation. We used a beryllium-aluminum composition dipole to complement our previous measurement with a beryllium-titanium ... -
Rotationally equivariant learning of generalizable protein structure-to-function maps
Proteins play a central role in biology from immune recognition to brain activity. Although major advances in machine learning have improved our ability to predict protein structure from sequence, determining protein ... -
Scaling and phase transitions in one-dimensional nonequilibrium driven systems
(2003)We investigate scaling and phase transitions in 1D driven lattice gas models, related to Kardar-Parisi-Zhang (KPZ) surface dynamics. The results of three studies are presented. In the first one, we generalize the asymmetric ... -
Search for associated production of Z and Higgs bosons in proton-antiproton collisions at 1.96 TeV.
(ProQuest Information and Learning, 2010)We present a search for associated production of Z and Higgs bosons in 4.2/fb of ppbar collisions at sqrt{s} = 1.96 TeV, produced in RunII of the Tevatron and recorded by the D0 detector. The search is performed in ... -
A search for astrophysical point sources of neutrinos with Super-Kamiokande
(2002)Using a data sample of 2037 upward-going muons gathered by the Super-Kamiokande detector during 1479.6 days of average effective live time between April 1, 1996, and December 8, 2000, a search for evidence of astrophysical ... -
Search for Events with Two Displaced Vertices from Pair-Produced Neutral Long-Lived Particles Decaying to Hadronic Jets in the Muon Spectrometer of the ATLAS Detector with Full Run 2 Data
This analysis is a search for events with two displaced vertices reconstructed from the decay of pair-produced neutral, weakly-interacting, long-lived particles using the muon spectrometer of the ATLAS detector. The search ... -
Search for long-lived particles decaying in the muon spectrometer of the ATLAS detector at the LHC
This thesis presents the results of two searches for long-lived, weakly-interacting neutral particles. These searches are performed with 22.1/fb of proton-proton collision data collected with the ATLAS detector at the Large ... -
Search for Neutrinoless Double Beta Decay Using the Full Majorana Demonstrator Dataset
The \textsc{Majorana} Collaboration is searching for the neutrinoless double-$\beta$ decay of $^{76}$Ge. The \textsc{Majorana Demonstrator} consists of two modular arrays of high-purity Ge detectors operated in vacuum ... -
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 ... -
Search for Weakly-interacting Long-lived Particles in Proton-Proton Collisions at sqrt(s) = 7 TeV with the ATLAS Detector
(2012-09-13)A search for the decay of a light Higgs boson to a pair of weakly-interacting, long-lived particles in 1.94/fb of proton-proton collisions at sqrt(s) = 7 TeV recorded in 2011 by the ATLAS detector is presented. The strategy ... -
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 ... -
Search for Weakly-interacting, Long-lived particles that Decay to Displaced Hadronic Jets in Proton-Proton Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector.
A search is presented for the decay of the Standard Model Higgs boson or another scalar boson to a pair of weakly-interacting, long-lived particles in 20.3 fb$^{-1}$ of proton-proton collisions at $\sqrt{s} = 8$ TeV recorded ...