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Showing 1 to 9 of 9 for “"baryogenesis"”.
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CP-Violation and Baryogenesis on Electroweak Scales
… 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 direct observations and introduce theoretical bounds on CP-violation in …
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Controlled derivation of semiclassical transport equations for electroweak baryogenesis
… study a basic ingredient 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 …
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Dark matter, inflation and baryogenesis in supersymmetric extensions of the standard model
… (DM), gauge invariant inflation and electroweak baryogenesis could coexist. We chose a few benchmark points within the minimal supersymmetric SM (MSSM) with non–universal Higgs masses to illustrate how the allowed regions for the DM relic abundance and the particle physics constraints could …
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Neutrino masses and Baryogenesis via Leptogenesis in the Exceptional Supersymmetric Standard Model
Neutrino oscillation experiments discover that (left-handed) neutrinos have masses much less than charged leptons and quarks in the Standard Model. One solution to the light neutrino mass puzzle is the seesaw model where right-handed neutrinos are introduced with large Majorana masses. The heavy …
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Applications of particle physics to the early universe
… Theory, which have influence on the theory of Baryogenesis, of Dark Matter, and of Big Bang Nucleosynthesis. The analysis of the data of the experiment WMAP on the CMB for the search of a non-Gaussian signal is also presented and it results in an upper limit on the amount on non-Gaussianities …
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Some Aspects of Inflationary Particle Production
… with C and CP violation, leading to the coherent baryogenesis scenario. We present models where this mechanism is operative in the context of hybrid inflation and the grand unified theories Pati-Salam and SO(10). It is shown that a baryon asymmetry in accordance with observation may result. …
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Improved Search for Heavy Neutral Scalars A and H Using ttZ Events from 13 TeV pp Collisions at CMS
… model, excluding regions relevant to electroweak baryogenesis. A statistical combination is performed with a complementary CMS search in the two-lepton final state, where the top quark pair decays entirely to hadrons. The combination improves the expected sensitivity and extends the excluded …
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EXPANSION AFTER INFLATION AND REHEATING WITH A CHARGED INFLATON
Within the inflationary paradigm, our patch of the universe near the end of inflation is highly homogeneous and isotropic as necessitated by cosmic microwave background observations. This patch, however, is also in a cold and non-thermal state. A successful model of an inflationary primordial …
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Polarisierte Photon- und geflavourte Lepton-Quantenboltzmanngleichungen im frühen Universum
Polarisation and Nongaussianity are expected to play a central role in future studies of the cosmic microwave background radiation. Polarisation can be split into a divergence-like E-mode and a curl-like B-mode, of which the later can only be induced by primordial gravitational waves (tensor …