School of Physics - Theses
Now showing items 1-10 of 179
Searching for signals of Dark Matter produced with top quark pairs using the ATLAS detector
Understanding the nature of Dark Matter is a key goal in modern physics. The observed gravita-tional interactions of galaxies and galactic clusters, along with theories of structure formation in the early universe, indicate ...
High field phenomenology in linear accelerators for the compact linear collider
The Compact Linear Collider (CLIC) is a 3 TeV linear electron-positron collider which is proposed to operate with loaded accelerating gradients up to 100 MV/m. These high gradients are accompanied by high field phenomena ...
Background estimation studies for hadronically decaying tau leptons at the ATLAS experiment
This project aims to develop a data-driven technique for the estimation of the dominant background contribution in the inclusive search for new physics signals where equally charged lepton pairs are featured in the final ...
Dynamical fingerprints of black holes in globular clusters
Globular clusters (GCs), compact stellar systems orbiting in and around galaxies, are natural laboratories to study a diverse range of astrophysical processes. The current stellar population of the oldest GCs in our ...
Quantum technology for 3D imaging of single molecules
Biochemical processes are conducted by interactions of individual molecules that comprise cells. It is the transient physical shape of proteins that dictates their specific functionality. However, imaging individual instances ...
Probing Higgs Boson physics in decays to tau leptons with the ATLAS experiment
The discovery of the Higgs boson in 2012 has opened up a new sector of particle physics to measurements of yet undiscovered couplings. Measurements of the numerous couplings of the Higgs boson - primarily through studies ...
Measurement of R(D) and R(D*) with a semileptonic tag at the Belle experiment
In recent years, several measurement of the ratios R(D) = B(B ̄ → Dτ−ν ̄τ )/B(B ̄ → Dl−ν ̄l )andR(D∗)=B(B ̄→D∗τ−ν ̄τ )/B(B ̄→D∗l−ν ̄l ),whereldenotesanelectron or a muon, have obtained results in disagreement with the ...
Optical trapping and tracking of nanoparticles using plasmonic nanoapertures and dielectric nanoantennas
This dissertation demonstrates the optical trapping and direct tracking of single nanoparticles using a plasmonic double nanohole aperture in a gold film and an all-silicon nanoantenna on a silicon substrate. For both ...
Pathways towards graphene based electrical DNA sequencing: a study of nucleobase adsorption on exposed channel graphene field effect transistors
The field of genetics has grown rapidly since the isolation of the double helix complex, DNA, that provides the genetic code behind all known life. The development of methods that allow this code to be read, and more ...
Simulations of source recovery and completeness in galaxy surveys at high redshift
The search for and characterisation of galaxies at high-redshift is a very active topic in Astrophysics. Thanks to advances in observations from space, the redshift frontier is approaching the epoch of formation of first ...