Neutralino dark matter with inert higgsinos and singlinos
Hall, Jonathan P. and King, Stephen F. (2009) Neutralino dark matter with inert higgsinos and singlinos. Journal of High Energy Physics, 2009, (JHEP08), 088-088. (doi:10.1088/1126-6708/2009/08/088)
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Description/Abstract
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 β < 2.
| Item Type: | Article |
|---|---|
| ISSN: | 1126-6708 (print) 1029-8479 (electronic) |
| Uncontrolled Keywords: | supersymmetry phenomenology |
| Subjects: | Q Science > QA Mathematics Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Physics and Astronomy > Southampton High Energy Physics |
| ePrint ID: | 179069 |
| URI: | http://eprints.soton.ac.uk/id/eprint/179069 |
| Deposited On: | 26 Apr 2011 14:00 |
| Last Modified: | 01 Jun 2011 04:27 |
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