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EnglishWe show that a recently constructed five-dimensional (5D) model with gauge-Higgs unification and explicit Lorentz symmetry breaking in the bulk, provides a natural dark matter candidate. This is the lightest Kaluza-Klein particle odd under a certain discrete Z(2) symmetry, which has been introduced to improve the naturalness of the model, and resembles KK-parity but is less constraining. The dark matter candidate is the first KK mode of a 5D gauge field and electroweak bounds force its mass above the TeV scale. Its pair annihilation rate is too small to guarantee the correct relic abundance; however coannihilations with colored particles greatly enhance the effective annihilation rate, leading to realistic relic densities.
A dark matter candidate from an extra (non-universal) dimension / Regis, M; Serone, Marco; Ullio, Piero. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2007:03(2007), pp. 084.1-084.27. [10.1088/1126-6708/2007/03/084]
| Titolo: | A dark matter candidate from an extra (non-universal) dimension | |
| Autori: | Regis, M; Serone, Marco; Ullio, Piero | |
| Rivista: | ||
| Data di pubblicazione: | 2007 | |
| Volume: | 2007 | |
| Fascicolo: | 03 | |
| Pagina iniziale: | 1 | |
| Pagina finale: | 27 | |
| Numero di Articolo: | 084 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/1126-6708/2007/03/084 | |
| URL: | http://iopscience.iop.org/1126-6708/2007/03/084 | |
| Appare nelle tipologie: | 1.1 Journal article |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| DM_ED.pdf | Versione Editoriale (PDF) | Non specificato | Administrator Richiedi una copia | |
| JHEP_2007_03_084.pdf | Versione Editoriale (PDF) | Non specificato | Open Access Visualizza/Apri |
http://hdl.handle.net/20.500.11767/16534
