Neutralino annihilation processes in the minimal supergravity model
| dc.creator | Stefaniak, Tim | |
| dc.date | 2008-06-13 | |
| dc.date.accessioned | 2026-07-07T09:44:29Z | |
| dc.date.available | 2026-07-07T09:44:29Z | |
| dc.description | We study all tree-level neutralino annihilation processes concerning energy-dependence at the mSUGRA benchmark point SPS1a using tree-level calculators MadGraph and CompHEP as well as FormCalc. We further investigate the total tree-level neutralino annihilation cross section by scanning over the mSUGRA parameters and identifying the dominant channels in every region. The results for the cross sections are presented in the m1/2-m0 planes for different values of tan(beta) and A0. We identify as well the resonances due to the exchange of the heavy Higgs bosons A and H in the s-channel of many neutralino annihilation processes, where the total cross section increases significantly if these Higgs bosons can be produced close to on-shell. Finally, we provide a few comments on the neutralino annihilation processes at loop-level. | |
| dc.description | 22 pages, 36 figures | |
| dc.identifier | https://arxiv.org/abs/0806.2214 | |
| dc.identifier | http://arxiv.org/abs/0806.2214 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/162890 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Neutralino annihilation processes in the minimal supergravity model | |
| dc.type | text |