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 95 for “"electroweak"”.
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CP-Violation and Baryogenesis on Electroweak Scales
… we study different aspects of CP-violation on electroweak scales and in this context quantum transport in electroweak baryogenesis. First we focus on CP-violation of CKM type as it is present in the Standard Model. We explain basic concepts and the reason for the smallness of CP-violation in …
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Effective field theory of the electroweak sector
… which generate corrections to precision electroweak quantities through gauge boson propagators. I start with an analysis involving just two operators contributing at one loop in which I show that loop calculations, and the renormalization program in particular, can be carried out in a …
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Electroweak Structure of Three-and Four-Body Nuclei
… IX three-nucleon interactions. The nuclear electroweak charge and current operators include one- and many-body components. The predicted magnetic form factor of <sup>3</sup>H, charge form factors and static properties of both <sup>3</sup>H and <sup>3</sup>He, are in satisfactory agreement …
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Experimental tests of electroweak theories at MARK-J
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1984.
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Searching for novel objects in the electroweak theory
… Higgs-Gauge configuration space in the standard electroweak theory. We outline a general prescription that uses the non-trivial topology associated with the gauge group of the theory, to find known solutions of the Euclidean classical equations of motion and motivate the existence of novel ones. …
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Electroweak Calculations In The Presence Of Nonperturbative Qcd Effects
… order parameter into lowest-order electroweak quark self-energies is shown to satisfy on-mass-shell gauge parameter independence only if there is no contribution from the dynamical symmetry breaking parameter {dollar}langlebarPsiPsirangle.{dollar} Dynamical contributions to the …
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The electroweak phase transition in models with gauge singlets
… baryon asymmetry; and also to save it during the electroweak phase transition (EWPT). However this condition is not fulfilled within the Standard Model (SM), but in its extensions. It is widely believed that the existence of singlet scalars in some Standard Model extensions can easily make the …
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Controlled derivation of semiclassical transport equations for electroweak baryogenesis
… for the description of baryogenesis at the electroweak phase transition: we provide a controlled derivation of semiclassical transport equations for CP-violating flows for a system of scalar and fermionic fields in the presence of a slowly varying background field. This is the situation in a …
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Electroweak measurements using heavy quarks identified in e⁺⁻ annihilation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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Enhancing the sensitivity of the ATLAS experiment to electroweak supersymmetry
… the sensitivity of the ATLAS experiment to the electroweak production of supersymmetric particles. First, realistic supersymmetric scenarios contain a large number of free parameters and a rich phenomenology which is not captured by the simplified model interpretations provided by typical ATLAS …
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Aspects of electroweak symmetry breaking in physics beyond the standard model
… 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 Collider (LHC). However constraints on new physics indicate …
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Observation of electroweak W±W± JJ production with the CMS experiment
… The main result is the observed significance for electroweak production of W±W± JJ, which is 5.5 standard deviations, consistent with the Standard Model expectation of 5.7 standard deviations. Additionally, limits are set on anomalous quartic gauge couplings and on the vector boson fusion …
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Electroweak symmetry breaking in the era of the Higgs boson discovery
… thesis we study possible deviations from the electroweak symmetry breaking mechanism as predicted by the Standard Model (SM), and we introduce a new framework to analyze hadronic final states at colliders. In the first part, we begin by considering supersymmetric extensions of the SM and by …
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Three loop corrections to electroweak precision observables in the large Higgs mass limit
… formulation of a theory of the unified <br>electroweak interaction, theoretically consistent and in agreement <br>with all experimentally known phenomena of electroweak origin, <br>with the exception of the evidence of neutrino mixing. <br>During the eleven years of data collection at the …
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Nucleon-Nucleon Spin Dependent Scattering Amplitudes to Describe Final State Interactions in Electromagnetic and Electroweak Nuclear Processes
<p>There are currently no models readily available that provide nucleon-nucleon spin dependent scattering amplitudes at high energies (<em> s</em> ≥ 6 GeV<sup>2)</sup>. This work aims to provide a model for calculating these high-energy scattering amplitudes. The foundation of the model is Regge …
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SEARCH FOR ELECTROWEAK PRODUCTION OF SUPERSYMMETRIC PARTICLES IN COMPRESSED MASS SPECTRA WITH THE ATLAS DETECTOR AT THE LHC
In questa tesi, sono presentate due analisi che cercano la produzione di particelle supersimmetriche attraverso l'interazione elettrodebole: la ricerca di chargini, dove i chargini prodotti decadono in bosoni W e neutralini, e la ricerca di tracce displaced, ossia di tracce cariche spostate dal …
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Inclusive Electroweak measurements in the muon channel with pp collisions at [the square root of] s=7 TeV
… These are currently the most precise Electroweak measurements at the LHC.
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Observation of the electroweak production of two same-sign W bosons in proton-proton collisions with the ATLAS detector
… within the Standard Model (SM). It results from electroweak mediated processes such as Vector Boson Scattering (VBS), a process linked with electroweak symmetry breaking. Therefore, an observation of the W±W± VBS process does not only confirm the predictions of the SM at such a small …
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