Top-Quark FCNC Decay t->cgg in Topcolor-assisted Technicolor Model
| dc.creator | Zhang, Huan-Jun | |
| dc.date | 2007-12-02 | |
| dc.date.accessioned | 2026-07-07T11:13:29Z | |
| dc.date.available | 2026-07-07T11:13:29Z | |
| dc.description | The topcolor-assisted technicolor (TC2) model predicts several pseudo-scalars called top-pions and at loop level they can induce the FCNC top quark decay t->cgg which is extremely suppressed in the Standard Model (SM). We find that in the allowed parameter space the TC2 model can greatly enhance such a FCNC decay and push the branching ratio up to 10^{-3}, which is much larger than the predictions in the SM (10^{-9}) and in the minimal supersymmetric model (10^{-4}). We also compare the result with the two-body FCNC decay t-> cg and find that the branching ratio of t-> cgg is slightly larger than t-> cg. Such enhanced FCNC top quark decays may serve as a good probe of TC2 model at the future top quark factory. | |
| dc.description | 11 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0712.0151 | |
| dc.identifier | http://arxiv.org/abs/0712.0151 | |
| dc.identifier | Phys.Rev.D77:057501,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.057501 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191734 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Top-Quark FCNC Decay t->cgg in Topcolor-assisted Technicolor Model | |
| dc.type | text |