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Dark Matter in split extended supersymmetry

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dc.contributor.author Provenza, Alessio en_US
dc.contributor.author Quiros, Mariano en_US
dc.contributor.author Ullio, Piero en_US
dc.date.accessioned 2006-09-07T11:14:33Z en_US
dc.date.accessioned 2011-09-07T20:27:30Z
dc.date.available 2006-09-07T11:14:33Z en_US
dc.date.available 2011-09-07T20:27:30Z
dc.date.issued 2006-09-07T11:14:33Z en_US
dc.identifier.citation JCAP 12 (2006) 007 en_US
dc.identifier.uri http://preprints.sissa.it/xmlui/handle/1963/1853 en_US
dc.description.abstract We consider the split extended (N=2) supersymmetry scenario recently proposed by Antoniadis et al. [hep-ph/0507192] as a realistic low energy framework arising from intersecting brane models. While all scalar superpartners and charged gauginos are naturally at a heavy scale, the model low energy spectrum contains a Higgsino-like chargino and a neutralino sector made out of two Higgsino and two Bino states. We show that the lightest neutralino is a viable dark matter candidate, finding regions in the parameter space where its thermal relic abundance matches the latest determination of the density of matter in the Universe by WMAP. We also discuss dark matter detection strategies within this model: we point out that current data on cosmic-ray antimatter already place significant constraints on the model, while direct detection is the most promising technique for the future. Analogies and differences with respect to the standard split SUSY scenario based on the MSSM are illustrated. en_US
dc.format.extent 203287 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.relation.ispartofseries SISSA;46/2006/EP en_US
dc.relation.ispartofseries arXiv.org;hep-ph/0609059 en_US
dc.relation.uri 10.1088/1475-7516/2006/12/007 en_US
dc.title Dark Matter in split extended supersymmetry en_US
dc.type Preprint en_US
dc.contributor.department Elementary Particle Theory en_US
dc.contributor.area Physics en_US


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