t {r_arrow} cWW and WW {r_arrow} {anti t}c + t{anti c} in extended models
Jenkins has pointed out that the process t {r_arrow} cW{sup +}W{sup {minus}}is GIM suppressed in the standard model. In this note, the authors calculate the branching ratio for a wide range of models, in which the decay occurs at tree level through exchange of a scalar, fermion or vector. In the case of scalar exchange, a scalar mass between 2m{sub W} and 200 GeV leads to a resonant enhancement, giving a branching ratio as high as a few tenths of a percent. They then note that all of these models will also allow W{sup +}W{sup {minus}} {r_arrow} {anti t}c + t{anti c}, and they calculate the single-top/single-charm production rate at the LHC. The rates aren't negligibly small, but the background from single-top/single-bottom production will probably swamp the signal.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 756475
- Report Number(s):
- DOE/ER/40150-1568; JLAB-THY-97-33; WM-97-109; hep-ph/9707229; TRN: US0003087
- Journal Information:
- Phys.Lett. B411 (1997) 306-312, Other Information: Submitted to Phys.Lett. B411 (1997) 306-312; PBD: 1 Jul 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Evidence of K{sup +} {r_arrow} {pi}{sup +}{nu}{anti {nu}}: The BNL E787 1995 result (How did we get here)
Implications of a {bold {ital W}}{sup +}{bold {ital W}}{sup {minus}}({bold {ital ZZ}})-Higgs boson- {bold {ital t{bar c}}} interaction for {bold {ital e}}{sup +}{bold {ital e}}{sup {minus}}{r_arrow}{bold {ital t{bar c}{nu}{sub e}{bar {nu}}}}{bold {ital {sub e}}}, {bold {ital t{bar c}e}}{sup +}e{sup {minus}}, {bold {ital t{bar c}Z}} and for {bold {ital t{r_arrow}cW}}{sup +}{bold {ital W}}{sup {minus}}, {bold {ital cZZ}} in a two Higgs doublet model