Gamma Rays from Kaluza-Klein Dark Matter
| dc.creator | Bergstrom, Lars | |
| dc.creator | Bringmann, Torsten | |
| dc.creator | Eriksson, Martin | |
| dc.creator | Gustafsson, Michael | |
| dc.date | 2004-10-14 | |
| dc.date | 2005-04-18 | |
| dc.date.accessioned | 2026-07-07T10:47:55Z | |
| dc.date.available | 2026-07-07T10:47:55Z | |
| dc.description | A TeV gamma-ray signal from the direction of the Galactic center (GC) has been detected by the H.E.S.S. experiment. Here, we investigate whether Kaluza-Klein (KK) dark matter annihilations near the GC can be the explanation. Including the contributions from internal bremsstrahlung as well as subsequent decays of quarks and tau leptons, we find a very flat gamma-ray spectrum which drops abruptly at the dark matter particle mass. For a KK mass of about 1 TeV, this gives a good fit to the H.E.S.S. data below 1 TeV. A similar model, with gauge coupling roughly three times as large and a particle mass of about 10 TeV, would give both the correct relic density and a photon spectrum that fits the complete range of data. | |
| dc.description | 4 pages, 3 figures. Revised version; minor changes in text and figures, two references added | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0410359 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0410359 | |
| dc.identifier | Phys.Rev.Lett.94:131301,2005 | |
| dc.identifier | doi:10.1103/PhysRevLett.94.131301 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/183703 | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Gamma Rays from Kaluza-Klein Dark Matter | |
| dc.type | text |