Cosmological amount of baryons

Tsutomu Yanagida, Motohiko Yoshimura

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


The grand unified SU(5) model is analyzed as to whether it can give a sizable, cosmological baryon asymmetry consistent with the observation, NB/Nγ = O(10-8-10-10). Assuming a recently suggested decay mechanism of the heavy X-boson, we find that a numerical agreement is possible only if the minimal Higgs system is extended to allow a general class of CP violation and if interesting constraints on parameters of the SU(5) model are satisfied.

Original languageEnglish
Pages (from-to)534-548
Number of pages15
JournalNuclear Physics, Section B
Issue number3-4
Publication statusPublished - Jan 1 1980
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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