Sterile Neutrino Dark Matter Production in the Neutrino-phillic Two Higgs Doublet Model
Autor: | Adulpravitchai, Adisorn, Schmidt, Michael A. |
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Rok vydání: | 2015 |
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Zdroj: | JHEP12(2015)023 |
Druh dokumentu: | Working Paper |
DOI: | 10.1007/JHEP12(2015)023 |
Popis: | 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. Comment: 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 |
Databáze: | arXiv |
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