Coannihilation effects and relic abundance of higgsino-dominant LSPs

Satoshi Mizuta, Masahiro Yamaguchi

Research output: Contribution to journalArticlepeer-review

171 Citations (Scopus)


We calculate the relic abundance of higgsino-dominant ligtest superparticles, taking account of coannihilations with the superparticles which are almost degenerate with the lightest one. We show that their relic abundance is reduced drastically by the coannihilation processes and hence they are cosmologically of no interest.

Original languageEnglish
Pages (from-to)120-126
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
Publication statusPublished - 1993 Jan 7


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