Generation of hypermagnetic helicity and leptogenesis in early universe

Abstract

We study hypermagnetic helicity and lepton asymmetry evolution in plasma of the early Universe before the electroweak phase transition (EWPT) accounting for chirality flip processes via inverse Higgs decays and sphaleron transitions which violate the left lepton number and wash out the baryon asymmetry of the Universe (BAU). In the scenario where the right electron asymmetry supports the BAU alone through the conservation law $B/3-L_{eR}=const$ at temperatures $T>T_{RL}\simeq 10TeV$ the following universe cooling leads to the production of a non-zero left lepton (electrons and neutrinos) asymmetry. This is due to the Higgs decays becoming more faster when entering the equilibrium at $T=T_{RL}$ with the universe expansion, ${\Gamma }_{RL}\sim T>H\sim T^2$ , resulting in the parallel evolution of the right and the left electron asymmetries at $T<T_{RL}$ through the corresponding Abelian anomalies in SM in the presence of a seed hypermagnetic field. The hypermagnetic helicity evolution proceeds in a self-consistent way with the lepton asymmetry growth. The role of sphaleron transitions decreasing the left lepton number turns out to be negligible in given scenario. The hypermagnetic helicity plays a key role in lepto/baryogenesis in our scenario and the more hypermagnetic field is close to the maximum helical one the faster BAU grows up the observable value , $B_{obs}\sim 10^{-10}$.

arXiv comment17 pages, 4 figures

References in corpus (25)

• Magnetic Fields in the Early Universe
• Evidence for strong extragalactic magnetic fields from Fermi observations of TeV blazars
• Primordial Magnetic Fields, Right Electrons, and the Abelian Anomaly
• Primordial Hypermagnetic Fields and Triangle Anomaly
• Self-consistent evolution of magnetic fields and chiral asymmetry in the early Universe
• Sensitivity of gamma-ray telescopes for detection of magnetic fields in intergalactic medium
• On the Baryon, Lepton-Flavour and Right-Handed Electron Asymmetries of the Universe
• Current status of turbulent dynamo theory: From large-scale to small-scale dynamos
• Evolution of Primordial Magnetic Fields from Phase Transitions
• Chiral Effects and Cosmic Magnetic Fields
• Large-scale magnetic fields can explain the baryon asymmetry of the Universe
• Magnetohydrodynamics of Chiral Relativistic Fluids
• Magnetic Fields from QCD Phase Transitions
• Long-range magnetic fields in the ground state of the Standard Model plasma
• Anomalous Maxwell equations for inhomogeneous chiral plasma
• Leptogenesis and Primordial Magnetic Fields
• Lepton asymmetry growth in the symmetric phase of an electroweak plasma with hypermagnetic fields versus its washing out by sphalerons
• Instability of magnetic fields in electroweak plasma driven by neutrino asymmetries
• Leptogenesis via hypermagnetic fields and baryon asymmetry
• Is the baryon asymmetry of the Universe related to galactic magnetic fields?
• Lepton asymmetries and primordial hypermagnetic helicity evolution
• Chern-Simons anomaly as polarization effect
• Hypermagnetic helicity evolution in early universe: leptogenesis and hypermagnetic diffusion
• Leptogenesis in the Symmetric Phase of the Early Universe: Baryon Asymmetry and Hypermagnetic Helicity Evolution
• Flow of hypermagnetic helicity in the embryo of a new phase in the electroweak phase transition

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• Baryon Asymmetry and Gravitational Waves from Pseudoscalar Inflation
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• Influence of the turbulent motion on the chiral magnetic effect in the early Universe
• Asymmetric Dark Matter and Baryogenesis from Pseudoscalar Inflation
• On the Contributions to the ${\mathbf{U}}_{\mathbf{Y}}(1)$ Chern-Simons Term and the Evolution of Fermionic Asymmetries and Hypermagnetic Fields
• Fundamental Implications of Intergalactic Magnetic Field Observations
• The effects of the U${}_{\text{Y}}$(1) Chern-Simons term and its baryonic contribution on matter asymmetries and hypermagnetic fields
• Contribution of the chiral vortical effect to the evolution of the hypermagnetic field and the matter-antimatter asymmetry in the early Universe
• A Minimal System Including Weak Sphalerons for Investigating the Evolution of Matter Asymmetries and Hypermagnetic Fields
• The generation of matter-antimatter asymmetries and hypermagnetic fields by the chiral vortical effect of transient fluctuations
• The effects of non-helical component of hypermagnetic field on the evolution of the matter-antimatter asymmetry, vorticity, and hypermagnetic field
• On minimal energy states of chiral MHD turbulence
• Impact of hypermagnetic fields on relic gravitational waves, neutrino oscillations and baryon asymmetry
• Gravitational waves generation in turbulent hypermagnetic fields before the electroweak phase transition
• Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe
• Production of relic gravitational waves and the baryon asymmetry of the universe by random hypermagnetic fields