The single t-quark productions via the flavor-changing processes in the topcolor-assisted technicolor model at the hadron colliders

Abstract

In the framework of topcolor-assisted technicolor(TC2) model, there exist tree-level flavor-changing (FC) couplings which can result in the loop-level FC coupling $tcg$. Such $tcg$ coupling can contribute significant clues at the forthcoming Large Hadron Collider (LHC) experiments. In this paper, based on the TC2 model, we study some single t-quark production processes involving $tcg$ coupling at the Tevatron and LHC: $pp(p\bar{p})\to t\bar{q}(q=u,d,s),tg$. We calculate the cross sections of these processes. The results show that the cross sections at the Tevatron are too small to observe the signal, but at the LHC it can reach a few pb. With the high luminosity, the LHC has considerable capability to find the single t-quark signal produced via some FC processes involving coupling $tcg$. On the other hand, these processes can also provide some valuable information of the coupling $tcg$ with detailed study of the processes and furthermore provide the reliable evidence to test the TC2 model.

arXiv comment15 pages, 10 figures

References in corpus (32)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Observation of Top Quark Production in Pbar-P Collisions
• Observation of the Top Quark
• Topcolor Assisted Technicolor
• Natural Topcolor--Assisted Technicolor
• GIM Violation and New Dynamics of the Third Generation
• Top quark condensation
• FCNC top quark decay in the MSSM: a door to SUSY physics in high luminosity colliders?
• New Method for Detecting Charged (Pseudo-)Scalars at Colliders
• A New Model of Topcolor-Assisted Technicolor
• New Supersymmetric Contributions to $t->cV$
• Flavour changing top decays in supersymmetric extensions of the standard model
• Loop Induced Flavor Changing Neutral Decays of the Top Quark in a General Two-Higgs-Doublet Model
• Probing top flavour-changing neutral scalar couplings at the CERN LHC
• Scalars from Top-condensation Models at Hadron Colliders
• Top-Charm Associated Production in High Energy $e^{+}{e}^{-}$ Collisions
• Single Top Quark Production via FCNC Couplings at Hadron Colliders
• Symmetry Breaking and Generational Mixing in Topcolor--Assisted Technicolor
• Searching for $t\to cg$ at the Fermilab Tevatron
• Top-Charm Strong Flavor-Changing Neutral Currents at the Tevatron
• The rare top quark decays $t\to cV$ in the topcolor-assisted technicolor model
• SUSY-Induced Top Quark FCNC Processes at Linear Colliders
• Probing Topcolor-Assisted Technicolor from Top-Charm Associated Production at LHC
• Probing new physics from top quark FCNC processes at linear colliders : a mini review
• FCNC top quark production via anomalous tqV couplings beyond leading order
• The study of a flavor-changing neutral toppion production process $e^{+}{e}^{-}\to t\bar{c}{\Pi }_t^0$
• Production and FCNC decay of supersymmetric Higgs bosons into heavy quarks in the LHC
• Probing neutral top-pion via a flavor-changing process $\gamma \gamma \to t\bar{c}{\Pi }_t^0$
• The rare top decay $t\to cg$ in topcolor assisted technicolor models
• Searching for an anomalous $\bar{t}q\gamma$ coupling via single top quark production at a $\gamma \gamma$ collider
• SUSY-QCD Effect on Top-Charm Associated Production at Linear Collider