The Small Observed Baryon Asymmetry from a Large Lepton Asymmetry

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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Bibliographic Details
Main Authors:	March-Russell, J, Murayama, H, Riotto, A
Format:	Journal article
Language:	English
Published:	1999

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