Residual Non-Abelian Dark Matter and Dark Radiation

Abstract

We propose a novel particle physics model in which vector dark matter (VDM) and dark radiation (DR) originate from the same non-Abelian dark sector. We show an illustrating example where dark $SU(3)$ is spontaneously broken into $SU(2)$ subgroup by the nonzero vacuum expectation value of a complex scalar in fundamental representation of $SU(3)$. The massless gauge bosons associated with the residual unbroken $SU(2)$ constitute DR and help to relieve the tension in Hubble constant measurements between $\text{Planck}$ and Hubble Space Telescope. In the meantime, massive dark gauge bosons associated with the broken generators are VDM candidates. Intrinsically, this non-Abelian VDM can interact with non-Abelian DR in the cosmic background, which results in a suppressed matter power spectrum and leads to a smaller ${\sigma }_8$ for structure formation.

17 pages, 6 figures, updated discussions; Published version

References in corpus (9)

• Dark Matter and Dark Radiation
• Using the Milky Way satellites to study interactions between cold dark matter and radiation
• Dark Matter from a Classically Scale-Invariant $SU(3{)}_X$
• VDM: A model for Vector Dark Matter
• Light dark photon and fermionic dark radiation for the Hubble constant and the structure formation
• $\nu \Lambda$MDM: A Model for Sterile Neutrino and Dark Matter Reconciles Cosmological and Neutrino Oscillation Data after BICEP2
• Dark Radiation Alleviates Problems with Dark Matter Halos
• Measuring growth index in a universe with sterile neutrinos
• Dark matter in the hidden gauge theory

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