Neutrino mass and cosmological baryon excess in left-right symmetric grand unified theories

M. Fukugita, T. Yanagida, M. Yoshimura

Research output: Contribution to journalArticle

10 Citations (Scopus)


In left-right symmetric grand unified theories both the smallness of the neutrino mass and a sizable cosmological baryon excess can be ascribed to a superheavy Majorana lepton. We show, taking SO(10) as the simplest model of this kind, that the largest neutrino mass is constrained to lie between 10-3 eV and 100 eV in order to give the observed magnitude of baryon excess.

Original languageEnglish
Pages (from-to)183-187
Number of pages5
JournalPhysics Letters B
Issue number3
Publication statusPublished - Nov 5 1981
Externally publishedYes


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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