Sterile Neutrino Dark Matter Production in the Neutrino-phillic Two Higgs Doublet Model

Abstract

Sterile Neutrinos with a mass in the keV range form a good candidate for dark matter. They are naturally produced from neutrino oscillations via their mixing with the active neutrinos. However the production via non-resonant neutrino oscillations has recently been ruled out. The alternative production via Higgs decay is negligibly small compared to neutrino oscillations. We show that in the neutrino-phillic two Higgs doublet model, the contribution from Higgs decay can dominate over the contribution from neutrino oscillations and evade all constraints. We also study the free-streaming horizon and find that a sterile neutrino mass in the range of 4 to 53 keV leads to warm dark matter.

20 pages, 3 figures; v2: references added, Pauli blocking included, leading to about 40% correction to DM abundance, freestreaming horizon unaffected, conclusions unchanged, published in JHEP

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Cited by in corpus (15)

• A White Paper on keV Sterile Neutrino Dark Matter
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• Right-handed neutrino dark matter under the B-L gauge interaction
• Light Axinos from Freeze-in: production processes, phase space distributions, and Ly-$\alpha$ forest constraints
• Sterile neutrino Dark Matter production from scalar decay in a thermal bath
• Constraining FIMP from the structure formation of the Universe: analytic mapping from $m_{\mathrm{WDM}}$
• A Model for Pseudo-Dirac Neutrinos: Leptogenesis and Ultra-High Energy Neutrinos
• Cosmological Imprints of Frozen-In Light Sterile Neutrinos
• Leptogenesis and Dark Matter from Low Scale Seesaw
• The case for mixed dark matter from sterile neutrinos
• Probing New Physics Signals with Symmetry-Restored Yukawa Textures
• Sterile neutrino dark matter from right-handed neutrino oscillations
• Freeze-in and freeze-out of sterile neutrino dark matter
• Fingerprint matching of beyond-WIMP dark matter: neural network approach
• Sterile neutrino dark matter from a TeV Scale Seesaw