Model for Thermal Relic Dark Matter of Strongly Interacting Massive Particles

Phys. Rev. Lett. 115 (2015) 021301

Provides the first calculable realization of the SIMP mechanism using a QCD-like hidden sector where pseudo-Nambu-Goldstone bosons are the dark matter and the Wess-Zumino-Witten term mediates the 3-to-2 number-changing process.

The SIMP Miracle

Phys. Rev. Lett. 113 (2014) 171301

Introduces the SIMP paradigm in which the thermal relic abundance is set by 3-to-2 self-annihilations in a hidden sector that remains in kinetic equilibrium with the Standard Model. Predicts light (MeV-GeV) dark matter with sizable self-interactions.