Precision Calculations in Theoretical Particle Physics and the Search for New Physics
Date
2025-03-26
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
ORCID
0009-0002-9582-4864
Type
Thesis
Degree Level
Doctoral
Abstract
In order to advance the understanding of fundamental particles and their interactions, precision is crucial in theoretical particle physics predictions. In quantum field theory and quantum chromodynamics (QCD), improving corrections beyond the leading order in both perturbative and non-perturbative contributions to observable quantities are key to improving theoretical results. We analyze higher-order contributions through various methodologies, such as QCD sum rules, on observables including the $2^{++}$ tensor di-gluonium two-point correlator and the hadronic vacuum polarization contributions to the muon anomalous magnetic moment. We also develop a numerical computational methodology using pySecDec, a Python-based package for the numerical calculation of dimensionally-regulated loop integrals, to evaluate loop integrals at finite temperature in the Matsubara formalism. This work refines calculational precision and scope, both phenomenologically and methodologically, to support the search for new physics phenomena.
Description
Keywords
precision calculation, quantum field theory, quantum chromodynamics, QCD sum rules, high-energy physics, new physics phenomenology, theoretical particle physics
Citation
Degree
Doctor of Philosophy (Ph.D.)
Department
Physics and Engineering Physics
Program
Physics