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.
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Showing 1 to 20 of 122 for “"Beyond the Standard Model"”.
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Flavor physics beyond the standard model
… within a two-Higgs doublet extension of the Standard Model the quark and charged lepton mass hierarchy. We show that the experimental value of the lifetime difference in D⊃0⊃-anti-D⊃0⊃ mixing may be due to destructive interference of the Standard Model and New Physics contributions. We …
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Looking Beyond the Standard Model from the Lattice
<p>The overall motivation behind the work undertaken in this thesis, is to gain a deeper insight into the dynamics responsible for the Higgs mechanism. In particular we use lattice gauge theory techniques, to understand the inherent symmetry breaking patterns of three specific BSM (beyond the …
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Parton Distributions in Beyond the Standard Model Theories
… of precise predictions for collider experiments. They are usually determined from fits to experimental data under the assumption that the Standard Model (SM) of particle physics is complete; however, this can bias studies of beyond the Standard Model (BSM) physics if these SM-like PDFs are used in …
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Strong dynamics in theories beyond the standard model
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.
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Forces and gauge groups beyond the standard model
The discovery of the Higgs boson in 2012 completed the particle content of the Standard Model, but brought into sharp relief two outstanding problems: why is the Higgs so light, and what is the identity of 80% of the matter content of the universe? Neither appears to have an answer within the …
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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 …
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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 …
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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 …
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Beyond the standard model of cosmology : a perturbative approach
This thesis concerns higher order perturbations of the standard model of cosmology. The theme is addressed in two distinct research areas. The first area deals with linear perturbations of Bianchi type I model filled with dust whose flow is irrotational, and which is an analogue to second order …
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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 …
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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 …
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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 …
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Flavourful beyond the Standard Model physics at current and future colliders
The Standard Model of particle physics successfully explains nearly all non-gravitational phenomena observed in nature. Yet, both theoretical considerations and experimental data suggest that the model is incomplete and must be extended. This thesis investigates "flavourful" beyond the Standard …
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Advanced Reconstruction Techniques for CUORE: Searching Beyond the Standard Model with Cryogenic Calorimeters
Located within the Laboratori Nazionali del Gran Sasso (LNGS), the Cryogenic Underground Observatory for Rare Events (CUORE) is an experiment primarily searching for neutrinoless double beta decay in ¹³⁰Te. It is the largest operating sub-kelvin cryogenic detector array, instrumenting 988 TeO₂ …
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The brown muck of b^0 and b^0_s mixing: beyond the standard model
Standard Model contributions to neutral B meson mixing begin at the one loop level where they are further suppressed by a combination of the GIM mechanism and Cabibbo suppression. This combination makes B meson mixing a promising probe of new physics, where as yet undiscovered particles and/or …
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High Power Cyclotrons: The Bridge Between Beyond the Standard Model Physics, Computation, and Medical Applications
The IsoDAR cyclotron is a 60 MeV cyclotron designed to output lOmA of protons in order to be a driver for a neutrino experiment. Coupling the high flux generated by the IsoDAR system with a kiloton neutrino detector will provide sterile neutrino exclusion searches covering anomalous regions …
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The hunt for elusive partners in crime: secrets beyond the standard model. Beyond the standard model limits from the search for the associated production of a z boson with a photon in the atlas experiment
Contains fulltext : 321458.pdf (Publisher’s version ) (Open Access)
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Above and beyond the standard model : on phenomenology of Lee-Wick theory and massive vector color-octet
The present Thesis is dedicated to a formal and phenomenological investigation of extensions to two separate sectors of the Standard Model of particle physics (SM): the electroweak sector and the strong sector. The Thesis is divided into two main parts: Part I focuses on the Lee-Wick Standard Model …
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Beyond the standard model searches with b-jets and hadronically decaying τ-leptons with the ATLAS detector
This thesis describes the search for resonant and non-resonant Higgs boson pair production in the b ¯bτ +τ − decay channel. The main focus of this document is on the final state where both τ -leptons decay hadronically. The search is performed using 36.1 fb−1 of data collected by the ATLAS detector …
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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 …
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