Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/114055
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Type: | Journal article |
Title: | Dark matter in a constrained E₆ inspired SUSY model |
Other Titles: | Dark matter in a constrained E(6) inspired SUSY model |
Author: | Athron, P. Harries, D. Nevzorov, R. Williams, A. |
Citation: | The Journal of High Energy Physics, 2016; 2016(12):128-1-128-124 |
Publisher: | Springer |
Issue Date: | 2016 |
ISSN: | 1126-6708 1029-8479 |
Statement of Responsibility: | P. Athron, D. Harries, R. Nevzorov and A.G. Williams |
Abstract: | We investigate dark matter in a constrained E₆ inspired supersymmetric model with an exact custodial symmetry and compare with the CMSSM. The breakdown of E 6 leads to an additional U(1)N symmetry and a discrete matter parity. The custodial and matter symmetries imply there are two stable dark matter candidates, though one may be extremely light and contribute negligibly to the relic density. We demonstrate that a predominantly Higgsino, or mixed bino-Higgsino, neutralino can account for all of the relic abundance of dark matter, while fitting a 125 GeV SM-like Higgs and evading LHC limits on new states. However we show that the recent LUX 2016 limit on direct detection places severe constraints on the mixed bino-Higgsino scenarios that explain all of the dark matter. Nonetheless we still reveal interesting scenarios where the gluino, neutralino and chargino are light and discoverable at the LHC, but the full relic abundance is not accounted for. At the same time we also show that there is a huge volume of parameter space, with a predominantly Higgsino dark matter candidate that explains all the relic abundance, that will be discoverable with XENON1T. Finally we demonstrate that for the E₆ inspired model the exotic leptoquarks could still be light and within range of future LHC searches. |
Keywords: | Cosmology of theories beyond the SM; supersymmetric standard model |
Rights: | © The Authors. Article funded by SCOAP³. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
DOI: | 10.1007/JHEP12(2016)128 |
Published version: | http://dx.doi.org/10.1007/jhep12(2016)128 |
Appears in Collections: | Aurora harvest 3 Physics publications |
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hdl_114055.pdf | Published version | 3.51 MB | Adobe PDF | View/Open |
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