Scalar FCNC and rare top decays in a two Higgs doublet model "for the top"
| dc.creator | Baum, Itzhak | |
| dc.creator | Eilam, Gad | |
| dc.creator | Bar-Shalom, Shaouly | |
| dc.date | 2008-02-19 | |
| dc.date | 2008-02-25 | |
| dc.date.accessioned | 2026-07-07T11:56:09Z | |
| dc.date.available | 2026-07-07T11:56:09Z | |
| dc.description | In the so called two Higgs doublet model for the top-quark (T2HDM), first suggested by Das and Kao, the top quark receives a special status, which endows it with a naturally large mass, and also potentially gives rise to large flavor changing neutral currents (FCNC) only in the up-quark sector. In this paper we calculate the branching ratio (BR) for the rare decays t->ch and h->tc (h is a neutral Higgs) in the T2HDM, at tree level and at 1-loop when it exceeds the tree-level. We compare our results to predictions from other versions of 2HDM's and find that the scalar FCNC in the T2HDM can play a significant role in these decays. In particular, the 1-loop mediated decays can be significantly enhanced in the T2HDM compared to the 2HDM of types I and II, in some instances reaching BR~10^-4 which is within the detectable level at the LHC. | |
| dc.description | added two references. 15 pages, 14 figures | |
| dc.identifier | https://arxiv.org/abs/0802.2622 | |
| dc.identifier | http://arxiv.org/abs/0802.2622 | |
| dc.identifier | Phys.Rev.D77:113008,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.113008 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205488 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Scalar FCNC and rare top decays in a two Higgs doublet model "for the top" | |
| dc.type | text |