Lepton and Baryon Number Asymmetry of the Universe and PrimordialNucleosynthesis

Details Lepton and Baryon Number Asymmetry of the Universe and PrimordialNucleosynthesis Lepton and Baryon Number Asymmetry of the Universe and PrimordialNucleosynthesis

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pthph..80..468t&link_type=abstract

Progress of Theoretical Physics, Vol. 80, No. 3, pp. 468-476

Physics

18

Scientific paper

Primordial abundances of light elements produced in a universe with aweak lepton asymmetry are revised by using newly measured reactionrates for (7) Li and D. We found that the predicted abundances of D, T,(3) He, (4) He and (7) Li are consistent with the observational boundson the primordial abundances when baryon to photon ratio ande-lepton asymmetry satisfy the bounds; 3.0x 10(-10) = 5if e-leptons have a weak asymmetry of order ~ 10(-2) . Thepresent status of the comparison between the predicted primordialabundances of the light elements and observational constraints on themis also discussed.

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