Scalar Dark Matter Effects in Higgs and Top Quark Decays
| dc.creator | He, Xiao-Gang | |
| dc.creator | Li, Tong | |
| dc.creator | Li, Xue-Qian | |
| dc.creator | Tsai, Ho-Chin | |
| dc.date | 2007-01-19 | |
| dc.date | 2007-01-31 | |
| dc.date.accessioned | 2026-07-07T11:02:36Z | |
| dc.date.available | 2026-07-07T11:02:36Z | |
| dc.description | We study possible observational effects of scalar dark matter, the darkon D, in Higgs h and top quark t decay processes, h->DD and t->cDD in the minimal Standard Model (SM) and its two Higgs doublet model (THDM) extension supplemented with a SM singlet darkon scalar field D. We find that the darkon D can have a mass in the range of sub-GeV to several tens of GeV, interesting for LHC and ILC colliders, to produce the required dark matter relic density. In the SM with a darkon, t->cDD only occurs at loop level giving a very small rate, while the rate for Higgs decay h->DD can be large. In THDM III with a darkon, where tree level flavor changing neutral current (FCNC) interaction exists, a sizable rate for t->cDD is also possible. | |
| dc.description | 6 pages, 4 figures, Contribution to 2006 Symposium of CosPA; Typos corrected and new references added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0701156 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0701156 | |
| dc.identifier | Mod.Phys.Lett.A22:2121-2129,2007 | |
| dc.identifier | doi:10.1142/S0217732307025376 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/188304 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Scalar Dark Matter Effects in Higgs and Top Quark Decays | |
| dc.type | text |