Results 21 to 30 of about 2,521 (215)
ν electroweak baryogenesis [PDF]
Journal of High Energy Physics, 2020 We investigate if the CP violation necessary for successful electroweak baryo- genesis may be sourced by the neutrino Yukawa couplings. In particular, we consider an electroweak scale Seesaw realization with sizable Yukawas where the new neutrino ...
E. Fernández-Martínez +3 more
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Electroweak baryogenesis in the nMSSM
AIP Conference Proceedings, 2007 In this talk, electroweak baryogenesis in the nMSSM is discussed. We focus on differences compared to the MSSM. We conclude that electroweak baryogenesis in the nMSSM is rather generic. Still, sfermions of the first two generations are required to be heavy to evade constraints from electric dipole moments.
T. Konstandin, Konstandin, Thomas,
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Supersonic electroweak baryogenesis: achieving baryogenesis for fast bubble walls [PDF]
Journal of Cosmology and Astroparticle Physics, 2012 Standard electroweak baryogenesis in the context of a first order phase transition is effective in generating the baryon asymmetry of the universe if the broken phase bubbles expand at subsonic speed, so that CP asymmetric currents can diffuse in front of the wall.
Caprini, Chiara, No, Jose M., No, José
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, 2017 Abstract This chapter shows that a baryon asymmetry can be generated only if the Sakharov conditions are satisfied. The required departure from thermal equilibrium can be realised either in first-order phase transitions or in out-of-equilibrium decays.
Michael Kachelriess
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Strong and Electroweak Matter 2000, 2001 From observations of the universe and fundamental assumptions about its composition at early times, the conclusion of the existence of a mechanism producing a net baryon number is drawn.
Henrik Jönsson
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Is electroweak baryogenesis dead? [PDF]
Philos Trans A Math Phys Eng Sci, 2018 Electroweak baryogenesis is severely challenged in its traditional settings: the Minimal Supersymmetric Standard Model, and in more general two Higgs doublet models.
Cline JM.
europepmc +2 more sources
Journal of Cosmology and Astroparticle Physics, 2021 26 pages, 8 figures, Figure 8 replaced, included comments on supersymmetric and slow-roll inflation scenarios, version matched with ...
Wu, Yi-Peng, Petraki, Kalliopi
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Models of the Universe: Ontological and Physical Problems [PDF]
Философия и космология, 2022 The primary target of this paper is a philosophical analysis of modern models of the universe in cosmology. Understanding the existence of being is directly related to understanding both the world and oneself.
Iliana Vladlenova, Eduard Kalnytskyi
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On Extra Top Yukawa Couplings of a Second Higgs Doublet
Universe, 2022 A very likely New Physics in plain sight, but that the community does not see, is a second Higgs doublet that has a second set of Yukawa couplings. The extra tt and tc couplings can each drive baryogenesis, with O(1) Higgs quartic couplings providing a ...
George Wei-Shu Hou
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CP Violation for the Heavens and the Earth
Universe, 2022 Electroweak baryogenesis can be driven by the top quark in a general two Higgs doublet model with extra Yukawa couplings. Higgs quartics provide the first order phase transition, while extra top Yukawa coupling ρtt can fuel the cosmic baryon asymmetry ...
George Wei-Shu Hou
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