WIMP dark matter through the dilaton portal

Kfir Blum, Mathieu Cliche, Csaba Csáki, Seung Joon Lee

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Abstract: We study a model in which dark matter couples to the Standard Model through a dilaton of a sector with spontaneously broken approximate scale invariance. Scale invariance fixes the dilaton couplings to the Standard Model and dark matter fields, leaving three main free parameters: the symmetry breaking scale f, the dilaton mass mσ, and the dark matter mass mχ. We analyze the experimental constraints on the parameter space from collider, direct and indirect detection experiments including the effect of Sommerfeld enhancement, and show that dilaton exchange provides a consistent, calculable framework for cold dark matter with f, mσ, mχ of roughly similar magnitude and in the range ∼1 − 10 TeV. Direct and indirect detection experiments, notably future ground-based gamma ray and space-based cosmic ray measurements, can probe the model all the way to dark matter mass in the multi-TeV regime.

Original languageEnglish
Article number99
JournalJournal of High Energy Physics
Volume2015
Issue number3
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • Conformal and W Symmetry
  • Cosmology of Theories beyond the SM
  • Effective field theories

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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