Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 66 for “"Physics beyond the Standard Model"”.
-
Flavor physics beyond the standard model
<p>We examine possible New Physics impact on certain heavy quark flavor involving processes, such as charm and bottom strange meson-antimeson</p> <p>oscillations and leptonic meson decays. Also, we consider a possibility of</p> <p>explaining within a two-Higgs doublet extension of the Standard …
-
Low Energy Search For Physics Beyond The Standard Model
<p>After discussion of the theoretical aspects of the Standard Model we point out experimental observations that can not be answered within its framework. Methods for the inderect detection of the heavy (electroweak scale and above) and light New Physics particles are discussed. Study of the meson …
-
Neutrinos as Windows Into Physics Beyond the Standard Model
… several possible routes for extending the Standard Model of Particle Physics, based on phenomenological considerations. We focus particularly on the role of neutrino data, proton decay bounds and known fermion masses and mixing angles in constraining a viable model. First, we discuss …
-
Effective Field Theories for Physics Beyond the Standard Model
The wealth of data gathered by the LHC has tested the Standard Model to an unprecedented level, with searches for physics beyond the Standard Model placing strong constraints on new physics. As these constraints become more stringent, it is increasingly likely that physics beyond the Standard Model …
-
Physics beyond the standard model: moduli stabilisation and neutrino physics
We look at models of neutrino mass and mixing which represent an important aspect of physics beyond the Standard Model (SM). We derive approximate analytic formulae for the neutrino mixing angles in general SD involving NLO and NNLO corrections. These expressions, which are given in terms of input …
-
Exploring Non-Minimality in New Physics Beyond the Standard Model
The need to extend the Standard Model of particle physics is now well established with a multitude of observations heralding the existence of new physics beyond the realms of our present understanding. A plethora of new theoretical possibilities have been proposed to this end, each with vastly …
-
Aspects of electroweak symmetry breaking in physics beyond the standard model
Fine tuning in the Standard Model (SM) is the basis for a widespread expectation that the minimal model for electroweak symmetry breaking, with a single Higgs boson, is not realised in nature and that new physics, in addition to (or instead of) the Higgs, will be discovered at the Large Hadron …
-
Polarized Ultracold Neutrons: their transport in diamond guides and potential to search for physics beyond the standard model
… neutrons" (UCN) offer a new way to measure the decay correlations of neutron beta decay; these correlations can be used to test the completeness of the Standard Model and predict physics beyond it. Ultracold neutrons are very low energy neutrons that can be trapped inside of material and …
-
Phenomenology of new physics beyond the Standard Model: signals of Supersymmetry with displaced vertices and an extended Higgs sector at colliders
… of matter and its interactions is summarised in the Standard Model (SM) of particle physics. Many experiments have tested the predictions of the SM with great success, but others have brought our ignorance into focus by showing us there are new phenomena that we can not describe within the …
-
Constraints on New Physics from Neutrino and Other Particle Experiments
In this thesis we analyze a number of past, current, and future experiments to extract information on physics beyond the Standard Model. We use the Jacobi method to derive a set of simplified expressions for the probabilities of neutrino oscillations in matter. we show the possible constraints that …
-
Simulation of signal and background processes for collider experiments
This thesis is concerned with the theoretical modelling of scattering processes as they are studied at high-energy collider experiments. Special attention is thereby given to an accurate simulation of multi-particle final states that are expected to constitute the key signatures for the existence …
-
Effective field theory for top quark physics
The top quark plays an important role in the search for physics beyond the standard model because of its large mass. In the situation where new physics exist at an energy scale higher than the scale we can probe directly, it is desirable to have a model-independent approach, which we can use to …
-
Probing Lepton Flavour Universality With $\bz \to \kstarz \taup \taum$
… have long been known to be precise probes of physics beyond the Standard Model. A pattern of anomalies seen in $\bquark \to \squark \mup \mun$ and in $\bquark \to \cquark \tau \nu$ data has hinted at the violation of lepton flavour universality. Effective field theories which attempt to find …
-
Cosmological signatures of fundamental physics
This thesis deals with the study of the cosmological signatures of certain aspects of fundamental physics, and how cosmological observables can be used to constrain properties of fundamental particles. Over the past decades, increasingly precise measurements in cosmology have become powerful probes …
-
Applications of particle physics to the early universe
In this thesis, I show some of the results of my research work in the field at the crossing between Cosmology and Particle Physics. The Cosmology of several models of the Physics Beyond the Standard Model is studied. These range from an inflationary model based on the condensation of a ghost-like …
-
Lepton-Nucleus Constraints for Neutrino Interactions and Oscillations
… experiments aim to unambiguously determine the neutrino mass ordering, the charge-parity violating phase in the lepton sector and the possible existence of physics Beyond the Standard Model. To have an understanding of all the effects necessary for the success of these experiments, …
-
Holly Pacey and the Half-Spin Particles: Searching for new physics with leptons at the ATLAS experiment
Whilst the Large Hadron Collider (LHC) has spent just over a decade pushing experimental boundaries in energy and intensity of proton-proton collisions, it has yet to discover new physics beyond the Standard Model. The Standard Model remains one of the most robustly tested theories of all time, …
-
Effective field theories for inclusive B decays
In this thesis, we study inclusive decays of the B meson. These allow one to determine CKM elements precisely and to search for physics beyond the Standard Model. We use the framework of effective field theories, in particular the Soft-Collinear Effective Theory, which is a suitable method when the …
-
Rare-event searches with bolometers
… searches have played an integral part in the pursuit of physics beyond the Standard Model, offering us the chance to bridge the disparity between our current understanding and observed phenomena such as Dark Matter (DM) or the nature of neutrino masses. Over the last 30 years, these …
-
First results from a 20-liter prototype dark matter detector with directional sensitivity
… and cosmological evidence suggests that 27% of the energy content of the universe is in the form of non-baryonic matter referred to as "dark matter." Weakly interacting massive particles have long been considered attractive candidates for this dark matter and can be found in a wide variety of …
Page 1 of 4