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Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
A search is presented for a light pseudoscalar Higgs boson using full Run 2 data (2016-2018) collected by the CMS (Compact Muon Solenoid) experiment at the LHC (Large Hadron Collider), corresponding to an integrated luminosity of 137.60...
We explore the symmetries and systematics of the mass spectrum of hadrons with two heavy quarks. We also apply these symmetries to the strong decays of baryons with two heavy quarks. We explore the ramifications of a proposed symmetry...
Apart from the mesons that the constituent quark model predicts, QCD allows for additional states beyond the quark-antiquark system. Previous experiments have performed partial wave analysis on pion-production data and claim observation...
Hadronic form factors for semileptonic decay of the Λ[subscript c] are calculated in a nonrelativistic quark model. The full quark model wave functions are employed to numerically calculate the form factors to all orders in (1/m...
Angular Distributions, Polarization Observables, Spin Density Matrices and Statistical Tensors in Photoproduction of Two Pseudoscalar Mesons off a Nucleon
In two meson photoproduction off a nucleon, for the case in which two of the three final state hadrons are products of the decay of an intermediate resonance, general expressions for its decay distribution and for polarization...
The $\eta \pi$ decay channel is one of the "golden channels'' to search for the $\pi_1$ and other spin-exotic mesons. These exotic states show up as odd partial waves in the decay of the $\eta\pi$ system. Searching for this resonance...
In addition to ordinary q-qbar pairs, quantum chromodynamics (QCD) permits many other possibilities in meson spectra, such as gluonic hybrids, glueballs, and tetraquarks. Experimental discovery and study of these exotic states provides...
This dissertation mainly focuses on the investigation of the magnetic phase diagram of quasi two di- mensional triangular lattice antiferromagnets (TLAFs) Ba₃MNb₂O9 (M = Co2+ (S = 1/2), Mn2+ (S = 5/2)), and their multiferroic properties....
This dissertation is focused on electrical spin injection and detection at the nanoscale dimensions that semiconductor nanowires offer. Semiconductor spintronics is the natural extension of metallic spintronics for applications in...
Strongly correlated materials manifest some of the most intriguing behaviors found in condensed matter physics. However, their understanding remains a challenge because they cannot be described using standard theoretical approaches, as...
We perform a survey of the ( proton K+ K− ), 3 charged track data taken by the CLAS detector for the HyCLAS experiment [1] during the g12 run-period at Jefferson Lab. We aim to study the strong decay amplitudes, partial widths and...
The main topic of this dissertation is phase transitions and their unique dynamical behavior. Among the various manifestations of phase transitions, spatial ordering of magnetic moments (spins) as in a ferromagnet is of special interest....
How does subatomic matter organize itself? Neutron stars are cosmic laboratories uniquely poised to answer this fundamental question that lies at the heart of nuclear science. Newly commissioned rare isotope facilities, telescopes...
Baryon and hybrid baryon wave functions were built from harmonic oscillator basis states with explicit flavor and color. The Relativized Constituent Quark Model was extended to calculate more baryon states. Improvements were made to the...
Electrostatic interactions play an important role in many aspects of the structural and functional properties of biomolecules because of their long-range behavior. The nonlinear Poisson-Boltzmann equation (NLPBE) theory has long been...
The integration of soft (organic, biological) and hard (semiconducting, metallic) materials is of central importance in a host of emerging areas in materials research and nanoscience. Micro- and nano-scale hybrid soft/hard condensed...
The available information about strange excited mesons is limited and most of the observed states have been reported but not confirmed. While the low mass region (1.0 - 1.5 GeV) has been extensively studied in the past and states such as...
The GlueX experiment is located in Newport News, Virginia and aims to search for exotic quantum states that are not predicted by the quark model. These states include multi-quark configurations and configurations with excited gluons....
Single layer graphene (SLG) is a novel 2D system consisting of a single sheet of carbon atoms arranged in a honeycomb lattice, and exhibits a unique, linear low-energy dispersion. Bilayer graphene (BLG), two sheets stacked together, is...
Hadronic form factors for the rare weak transitions Λb→Λ(*) are calculated using a nonrelativistic quark model. The form factors are extracted in two ways. An analytic extraction using single component wave functions (SCA) with the quark...
Reaction physics involving composite objects with internal degrees of freedom is an important subject since it is encountered in the context of nuclear processes like fusion, fission, particle decay, as well as many other branches of...
Dilute magnetic semiconductor oxides are complex systems in which ferromagnetic and semiconducting properties coexist, potentially making these materials suitable for Spintronics applications. Understanding the fundamental physical...
In this dissertation, we introduce a new approach in building a hybrid nuclear model that combines some existing theoretical models and a \universal" approximator. The goal of such an approach is to obtain new predictions of nuclear...
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