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   Articles with "lepton asymmetry" as a keyword



Baryogenesis and first-order QCD transition with gravitational waves from a large lepton asymmetry

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recommendations! Published in 2024 at "Journal of High Energy Physics"

DOI: 10.1007/jhep06(2025)247

Abstract: Abstract A large primordial lepton asymmetry can lead to successful baryogenesis by preventing the restoration of electroweak symmetry at high temperatures, thereby suppressing the sphaleron rate. This asymmetry can also lead to a first-order cosmic… read more here.

Keywords: asymmetry; qcd transition; first order; lepton asymmetry ... See more keywords

Leptogenesis assisted by scalar decays

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recommendations! Published in 2024 at "Journal of High Energy Physics"

DOI: 10.1007/jhep07(2025)053

Abstract: We present a pragmatic approach to lower down the mass scale of right-handed neutrinos in leptogenesis by introducing a scalar decaying to right-handed neutrinos. The key point of our proposal is that the out-of-equilibrium decays… read more here.

Keywords: right handed; leptogenesis assisted; assisted scalar; leptogenesis ... See more keywords

Cosmic QCD Epoch at Nonvanishing Lepton Asymmetry.

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recommendations! Published in 2018 at "Physical review letters"

DOI: 10.1103/physrevlett.121.201302

Abstract: We investigate how a lepton asymmetry impacts the cosmic trajectory in the QCD phase diagram. We study the evolution of chemical potentials during the QCD epoch of the early Universe using susceptibilities from lattice QCD… read more here.

Keywords: cosmic qcd; lepton asymmetry; epoch nonvanishing; qcd epoch ... See more keywords

Indications for a Nonzero Lepton Asymmetry from Extremely Metal-Poor Galaxies.

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recommendations! Published in 2022 at "Physical review letters"

DOI: 10.1103/physrevlett.130.131001

Abstract: The recent measurement of helium-4 from the near-infrared spectroscopy of extremely metal-poor galaxies by the Subaru Survey may point to a new puzzle in the early Universe. We exploit this new helium measurement together with… read more here.

Keywords: poor galaxies; nonzero lepton; metal poor; extremely metal ... See more keywords