Dark-matter decay as a complementary probe of multicomponent dark sectors

Keith R. Dienes, Jason Kumar, Brooks Thomas, David Yaylali

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


In single-component theories of dark matter, the 2→2 amplitudes for dark-matter production, annihilation, and scattering can be related to each other through various crossing symmetries. The detection techniques based on these processes are thus complementary. However, multicomponent theories exhibit an additional direction for dark-matter complementarity: the possibility of dark-matter decay from heavier to lighter components. We discuss how this new detection channel may be correlated with the others, and demonstrate that the enhanced complementarity which emerges can be an important ingredient in probing and constraining the parameter spaces of such models.

Original languageEnglish (US)
Article number051301
JournalPhysical review letters
Issue number5
StatePublished - Feb 2 2015

ASJC Scopus subject areas

  • General Physics and Astronomy


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