Baryon asymmetry generation in the E 6 CHM

Flux-Induced Baryon Asymmetry

I propose that the primordial baryon asymmetry of the universe was induced by the presence of a non-vanishing antisymmetric field background Hμνρ across the three space dimensions. This background creates a dilute (B −L)-number density in the universe cancelling the contribution from baryons and leptons. This situation naturally appears if the U(1)B−L symmetry is gauged and the corresponding ga...

The Small Observed Baryon Asymmetry from a Large Lepton Asymmetry

Primordial Big-Bang Nucleosynthesis (BBN) tightly constrains the existence of any additional relativistic degrees of freedom at that epoch. However a large asymmetry in electron neutrino number shifts the chemical equilibrium between the neutron and proton at neutron freeze-out and allows such additional particle species. Moreover, the BBN itself may also prefer such an asymmetry to reconcile p...

On the Nature of the Baryon Asymmetry

The Baryon Asymmetry of the Universe

The possibility to explain the CMB measurement of the baryon asymmetry with leptogenesis results in a stringent bound on neutrino masses such that √ m1 + m 2 2 + m 2 3 < 0.30eV. We discuss the implications of such a bound for future experiments on the absolute neutrino mass scale. 1. THE BARYON ASYMMETRY OF THE UNIVERSE The observation of the acoustic peaks in the power spectrum of CMB temperat...

Holography, Charge, and Baryon Asymmetry

The reason for baryon asymmetry in our universe has been an open question for many years. This note shows that the holographic principle requires a charged preon model underlying the Standard Model of particle physics and, in consequence, requires baryon asymmetry. The baryon asymmetry predicted by a specific charged preon model in our closed inflationary Friedmann universe is consistent with o...