Beyond the Conventional Quark Model: Using QCD Sum Rules to Explore the Spectrum of Exotic Hadrons
Date
2020-08-25
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
ORCID
0000-0002-7359-9216
Type
Thesis
Degree Level
Doctoral
Abstract
Exotic hadrons are theoretical structures allowed by our current understanding of Quantum Chromodynamics (QCD), lying outside the traditional $q\bar{q}$, $qqq$, or $\bar{q}\bar{q}\bar{q}$ understanding of mesons and baryons. These exotic hadrons potentially give us a unique window into the properties of the gluon, the nature of color confinement, and the strong interaction. As we progress through the precision-era of particle physics and experiments such as BESIII, Belle, BaBar, LHCb, GlueX, and PANDA amass experimental data across the expected mass ranges of exotic hadrons (such as hybrid mesons with both $\bar{q}q$ quark content and a gluonic component), theoretical predictions of the individual mass states and the overall multiplet structure are crucial in identifying exotic states as well as departures from predicted behaviour. Using the methodology of QCD sum-rules (QCDSRs), we explore the properties of exotic hadrons, and discuss the QCDSR methodology and its extensions.
Description
Keywords
QCD, sum rules, exotic hadrons, hadronic physics, hybrid meson, hybrid baryon, scalar meson
Citation
Degree
Doctor of Philosophy (Ph.D.)
Department
Physics and Engineering Physics
Program
Physics