Heavy Majorana leptons and cosmological baryon excess

Tsutomu Yanagida, Motohiko Yoshimura

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Cosmological baryon excess is used to probe how the left-right symmetry should be broken in a basically symmetric grand unified theory. In the SO(10) model, the contribution from an intermediate state containing the chiral partner of a light ordinary neutrino cancels much of the usual baryon excess produced by a heavy-Higgs-boson decay unless the partner's mass is 1010 GeV. A mechanism of soft CP violation is also mentioned.

Original languageEnglish
Pages (from-to)2048-2054
Number of pages7
JournalPhysical Review D
Issue number9
Publication statusPublished - Jan 1 1981
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Heavy Majorana leptons and cosmological baryon excess'. Together they form a unique fingerprint.

Cite this