Single top production associated with a neutral scalar at LHC in topcolor-assisted technicolor

Abstract

The topcolor-assisted technicolor (TC2) model predicts a number of neutral scalars like the top-pion (${\pi }_t^0$) and the top-Higgs ($h_t^0$). These scalars have flavor-changing neutral-current (FCNC) top quark couplings, among which the top-charm transition couplings may be sizable. Such FCNC couplings induce single top productions associated with a neutral scalar at the CERN Large Hadron Collider (LHC) through the parton processes $cg\to t{\pi }_t^0$ and $cg\to t{h}_t^0$. In this note we examine these productions and find their production rates can exceed the $3\sigma$ sensitivity of the LHC in a large part of parameter space. Since in the Standard Model and the minimal supersymmetric model such rare productions have unobservably small production rates at the LHC, these rare processes will serve as a good probe for the TC2 model.

7 pages, 3 figs

References in corpus (7)

• Parton Distributions and the Strong Coupling Strength: CTEQ6AB PDFs
• SUSY-induced FCNC top-quark processes at the Large Hadron Collider
• Experimental Constraints on Scharm-Stop Flavor Mixing and Implications in Top-quark FCNC Processes
• Top-quark FCNC Productions at LHC in Topcolor-assisted Technicolor Model
• Rare Decay of the Top t->c l lbar and Single Top Production at International Linear Collider
• Single Top Production via Gluon Fusion at CERN LHC
• Single top-quark production by direct supersymmetric flavor-changing neutral-current interactions at the LHC

Cited by in corpus (4)

• Enhancing $thj$ Production from Top-Higgs FCNC Couplings
• Flavor-changing decays of the top quark in 5D warped models
• PGB pair production at LHC and ILC as a probe of the topcolor-assisted technicolor models
• The charged top-pion production associated with the bottom quark pair as a probe of the topcolor-assisted technicolor model at the LHC