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22. Mai 2024 · Abstract. Neutrinos, the mysterious particles with no charge and almost no mass, are almost as ubiquitous as photons. Trillions and quadrillions of them hit us every second and pass through, leaving no signature. Some of them come from the Sun, some are created in the upper atmosphere, and some are remnants of the very early moments of the ...
Vor einer Stunde · As of 2024, all fermions except for the neutrino have been proven to have a distinct antiparticle, implying that they are not Majorana fermions and are termed Dirac fermions. While they are a ...
22. Mai 2024 · Master Thesis defense by Merlijn van Emmerik. Title: Constraints on Heavy Neutral Leptons via Charged Lepton Flavor Violating Quarkonia Decays. Abstract: This work focuses on the constraints of heavy neutral leptons (HNLs), introduced via the Seesaw- Type-I mechanism in the minimal extension of standard model neutrinos.
Vor 23 Stunden · The inflaton interact with right-handed neutrinos and sneutrinos and we study extensively all of the possible cosmological scenarios that lead to standard cosmology. We follow the evolution of the dark matter sector, the remnant inflaton content and we find DM solutions with WIMP, FIMP or oscillating scalar field candidates.
Vor 23 Stunden · Neutrinos interact very weakly with matter, which makes them hard to detect. This is one of the reasons the exact nature of the neutrino is not fully understood, which is also why we don’t know if it is a Majorana fermion. Think of it as finding a needle in a haystack. If two beta decays were occurring, we would see two neutrinos. But if it were its own antiparticle, we would see the ...
22. Mai 2024 · 4.1 Introduction. From the very beginning, humankind has looked up in the sky and has seen the Sun, the Moon, the stars and the planets travel across the celestial dome. Even before the birth of the first hominid, birds in the sky and animals in the sea and on the land have followed the stars in their migratory paths.
Vor 12 Stunden · A scientist has claimed that researchers are trying to build small “handheld” nuclear reactors to help lure aliens to our home planet. The idea is based on the long-held notion that aliens find it easier to detect nuclear reactors, radiation or weapons. Some media reports in the past have even linked UFO sightings to nuclear sites across the world. Kevin Knuth, Professor of Physics at the ...
