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 addit...

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Hlavní autoři: March-Russell, J, Murayama, H, Riotto, A
Médium: Journal article
Jazyk:English
Vydáno: 1999

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