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 5 of 5 for “"Higgs portal"”.
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Cosmology of hidden sector with Higgs portal
… gauge interactions, but couple directly to the Higgs field. We particularly focus on their relic particle density as a candidate for dark matter. For the case of hidden sector without a gauge field we have improved the accuracy of the bounds on the coupling constant and give bounds on the …
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Higgs-Portal and Z'-Portal Dark Matters in Brane-World Cosmologies
… we consider two well-founded WIMP DM models: the Higgs-portal scalar DM model and the Z′-portal DM model. We analyze the effects of brane-world cosmology and identify the allowed parameter space by incorporating constraints from the observed DM relic density, as well as data from direct and …
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Hidden Sector: Three Different Ways
… scalars coupled to the Standard Model through a Higgs Portal. One of these projects looks at collider consequences and the other projects explores how such Hidden Sector may alter rare decays of B mesons
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Exploration of models of dark matter and portals to new physics
… The paradigm of probing new physics through portals, which are gauge-neutral Standard Model operators, alleviates many of these constraints. In this dissertation I explore the phenomenology of three different models of new physics. The first model proposes a setup of lepton-flavored dark …
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Searching for long-lived particles Beyond the Standard Model with displaced vertex signatures using the ATLAS detector: Not all hopes for new physics die immediately
… A focus on interpreting this search with the the Higgs Portal model predicts sensitivity to the exclusion of the Higgs branching ratio to hadronically-decaying long-lived particles to the lowest limit to date. As an outlook to the future of displaced vertex analyses using the ATLAS inner tracker …