Relic abundance of neutralinos in heterotic string theory: Weak versus strong coupling

Y. Kawamura, H. P. Nilles, M. Olechowski, M. Yamaguchi

研究成果: Article査読

抄録

The relic abundance of stable neutralinos is investigated in E8 × E′8 heterotic string theory when supersymnietry is spontaneously broken by hidden-sector gaugino condensates. In the weak coupling regime, very large scalar masses (compared to gaugino masses) are shown to lead to a too large relic abundance of the neutralinos, incompatible with cosmological observations in most of parameter space. The problem does not arise in the strong coupling regime (heterotic M-theory) because there scalar and gaugino masses are generically of the same order of magnitude.

本文言語English
ページ(範囲)XVIII-18
ジャーナルJournal of High Energy Physics
2
6
出版ステータスPublished - 1998 12 1
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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