Dark Matter in Supergravity
| dc.creator | Arnowitt, R. | |
| dc.creator | Dutta, B. | |
| dc.creator | Santoso, Y. | |
| dc.date | 2000-10-20 | |
| dc.date.accessioned | 2026-07-07T03:43:03Z | |
| dc.date.available | 2026-07-07T03:43:03Z | |
| dc.description | We consider neutralino-proton cross sections for halo dark matter neutralinos within the framework of supergravity models with R-parity invariance for models with universal soft breaking (mSUGRA) and models with nonuniversal soft breaking. The analysis includes the necessary corrections to treat the large tanbeta region (i.e. L-R mixing in the squark and slepton mass matrices, loop corrections to the b and tau masses,etc) and includes all coannihilation phenomena. For mSUGRA, dark matter detectors with current sensitivity are seen to be probing the region where tanbeta>~25, Omega h^2 <0.1, m_{chi_1^0}~<90 GeV, and for the light Higgs, m_h~< 120 GeV. Nonuniversal models can have a much larger cross section, and current detectors can probe part of the parameter space where tan>~4. Minimum cross sections are generally greater than 10^{-9} pb to 10^{-10} pb for m_{1/2} <600 GeV (and hence accessible to planned future detectors), with the exception of a region when mu <0 where for m_{1/2}>~450 GeV, 4~< tanbeta~<20, the cross section drops to a minimum of about 1\times10^{-12} pb at m_{1/2}=600 GeV, tan beta=~10. In this region, the gluino and squarks lie above 1 TeV, but should still be accessible to the LHC. | |
| dc.description | 16 pages, latex, 13 figures, talk at DARK 2000, Heidelberg, Germany, July 10-15, 2000 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0010244 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0010244 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/40084 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.title | Dark Matter in Supergravity | |
| dc.type | text |