Parity violation in composite inelastic dark matter models

Mariangela Lisanti, Jay G. Wacker

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Recent experimental results indicate that the dark matter sector may have a nonminimal structure with a spectrum of states and interactions. Inelastic scattering has received particular attention in light of DAMA's annual modulation signal. Composite inelastic dark matter (CiDM) provides a dynamical origin for the mass splittings in inelastic dark matter models. We show that higher dimensional operators in the CiDM Lagrangian lead to an admixture of inelastic and elastic scattering in the presence of parity violation. This scenario is consistent with direct detection experiments, even when parity violation is nearly maximal. We present an effective field theory description of such models and discuss the constraints from direct detection experiments. The CiDM model with parity violation has nontrivial phenomenology because of the multiple scattering channels that are allowed.

Original languageEnglish (US)
Article number055023
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number5
DOIs
StatePublished - Sep 28 2010

All Science Journal Classification (ASJC) codes

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

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