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astro-ph2002
Universal Lepton Asymmetry: New Constraints from the Cosmic Microwave Background and Primordial Nucleosynthesis
T. Kajino, M. Orito, G. J. Mathews +1
We study the primordial nucleosynthesis and cosmic age in the presence of a net lepton asymmetry as well as baryon asymmetry. We explore a previously unnoted region of the paramete…
astro-ph2000
Impact of Few-Body Reactions on Explosive Nucleosynthesis: The Big-Bang and Supernovae
Toshitaka Kajino, Kaori Otsuki, Shin-ya Wanajo +2
We study the few body reactions in explosive nucleosynthesis of light-to-heavy mass elements in various astrophysical conditions. In neutrino-driven winds of gravitational core col…
astro-ph2000
Neutrino Degeneracy and Decoupling: New Limits from Primordial Nucleosynthesis and the Cosmic Microwave Background
M. Orito, T. Kajino, G. J. Mathews +1
We reanalyze the cosmological constraints on the existence of a net universal lepton asymmetry and neutrino degeneracy. We show that neutrinos can begin to decouple at higher tempe…