Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 8, Pages -Publisher
SPRINGER
DOI: 10.1088/1126-6708/2009/08/088
Keywords
Supersymmetry Phenomenology
Categories
Funding
- JPH
- STFC Rolling [ST/G000557/1]
- EU Network [MRTN-CT-2004-503369]
- NATO [PST.CLG.980066]
- EU ILIAS [RII3-CT-2004-506222]
- Science and Technology Facilities Council [ST/G000557/1] Funding Source: researchfish
- STFC [ST/G000557/1] Funding Source: UKRI
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We discuss neutralino dark matter arising from supersymmetric models with extra inert Higgsinos and singlinos, where inert means that their scalar partners do not get vacuum expectation values. As an example, we consider the extended neutralino sector of the E6SSM, which predicts three families of Higgs doublet pairs, plus three singlets, plus a Z', together with their fermionic superpartners. We show that the two families of inert doublet Higgsinos and singlinos predicted by this model provide an almost decoupled neutralino sector with a naturally light LSP which can account for the cold dark matter relic abundance independently of the rest of the model, providing that the ratio of the two usual Higgs doublets satisfies tan beta < 2.
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