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Limits From Cosmological Nucleosynthesis On The Leptonic Numbers Of The Universe

BIANCONI, Andrea;
1991-01-01
1991
Altra università italiana
PE9_12 Dark matter, dark energy
ASTRONOMY & ASTROPHYSICS
sì
WOS:A1991EV65800005
Sì, ma tipo non specificato
Inglese
Internazionale
241
343
357
14
Constraints on chemical potentials and masses of "inos" are calculated using cosmological standard nucleosynthesis processes. It is shown that the electron neutrino chemical potential, zeta-nu-e, should not be greater than a value of the order of 1 and the possible effective chemical potential of the other neutrino species, zeta, and electron neutrino chemical potential are related approximately 10-zeta-nu-e almost-equal-to zeta in order not to conflict to observational data. The allowed region consistent with the He-4 abundance observations are insensitive to the baryon to proton ratio, eta, while those imposed by other light elements (D, He-3, Li-7) strongly depend on eta. Values of the chemical potentials calculated by Ruffini et al. (1988a), in a previous paper in the series, on the basis of a cellular large scale structure of the universe are shown to be consistent with cosmological nucleosynthesis.
Enti pubb. di ricerca ital.
3
info:eu-repo/semantics/article
262
Bianconi, Andrea; H. W., Lee; R., Ruffini
1 Contributo su Rivista::1.1 Articolo in rivista
none
1.1 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11379/36529
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