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Higgs Inflation and the Electroweak Gauge Sector
Stephon Alexander, Cyril Creque-Sarbinowski, Humberto Gilmer +1
We introduce a new method that allows for the Higgs to be the inflaton. That is, we let the Higgs be a pseudo-Nambu-Goldstone (pNG) boson of a global coset symmetry that spon…
Neutrino mass and mass ordering: No conclusive evidence for normal ordering
Stefano Gariazzo, Martina Gerbino, Thejs Brinckmann +8
The extraction of the neutrino mass ordering is one of the major challenges in particle physics and cosmology, not only for its implications for a fundamental theory of mass genera…
Dark Stars Powered by Self-Interacting Dark Matter
Youjia Wu, Sebastian Baum, Katherine Freese +2
Dark matter annihilation might power the first luminous stars in the Universe. These types of stars, known as dark stars, could form in protohalos a…
Constraining Axion-Like Particles with HAWC Observations of TeV Blazars
Sunniva Jacobsen, Tim Linden, Katherine Freese
Axion-like particles (ALPs) are a broad class of pseudo-scalar bosons that generically arise from broken symmetries in extensions of the standard model. In many scenarios, ALPs can…
Inelastic dark matter scattering off Thallium cannot save DAMA
Sunniva Jacobsen, Katherine Freese, Chris Kelso +2
We study the compatibility of the observed DAMA modulation signal with inelastic scattering of dark matter (DM) off of the Thallium (Tl) dopant in DAMA. In this work we tes…
Primordial non-Gaussianity from the Effects of the Standard Model Higgs during Reheating after Inflation
Aliki Litsa, Katherine Freese, Evangelos I. Sfakianakis +2
We propose a new way of studying the Higgs potential at extremely high energies. The Standard Model (SM) Higgs boson, as a light spectator field during inflation in the early Unive…