Production and decay of the neutral top-pion in high energy $e^{+}{e}^{-}$ colliders

Abstract

We study the production and decay of the neutral top-pion ${\pi }_t^0$ predicted by topcolor-assisted technicolor(TC2) theory. Our results show that, except the dominant decay modes $b\bar{b}$, $\bar{t}c$ and $gg$, the ${\pi }_t^0$ can also decay into $\gamma \gamma$ and $Z\gamma$ modes. It can be significantly produced at high energy $e^{+}{e}^{-}$ collider(LC) experiments via the processes $e^{+}{e}^{-}\to {\pi }_t^0\gamma$ and $e^{+}{e}^{-}\to Z{\pi }_t^0$. We further calculate the production cross sections of the processes $e^{+}{e}^{-}\to \gamma {\pi }_t^0\to \gamma \bar{t}c$ and $e^{+}{e}^{-}\to Z{\pi }_t^0\to Z\bar{t}c$. We find that the signatures of the neutral top-pion ${\pi }_t^0$ can be detected via these processes.

Latex file, 13 Pages, 6 eps figures. to be published in Phys.Rev.D

Cited by in corpus (22)

• Strong Dynamics and Electroweak Symmetry Breaking
• The study of a flavor-changing neutral toppion production process $e^{+}{e}^{-}\to t\bar{c}{\Pi }_t^0$
• Probing neutral top-pion via a flavor-changing process $\gamma \gamma \to t\bar{c}{\Pi }_t^0$
• The process $e^{+}{e}^{-}\to \bar{t}c$ in topcolor-assisted technicolor models
• Production of the neutral toppion at the e gamma colliders
• The rare top decay $t\to cg$ in topcolor assisted technicolor models
• Associated production of neutral toppion with a pair of heavy quarks in $\gamma \gamma$ collisions
• Detecting the neutral top-pion at $e^{+}{e}^{-}$ colliders
• Associated production of the top-pions and single top at hadron colliders
• Production of the top-pions at the THERA collider based $\gamma p$ collisions
• Study of the single neutral top-pion production process at $\gamma \gamma$ collider
• Top quark associated production of the neutral top-pion at high energy $e^{+}{e}^{-}$ colliders
• $H_{TC}{\Pi }^0$ and ${\Pi }^{+}{\Pi }^{-}$ pair productions at the planned $e^{+}{e}^{-}$ colliders in the topcolor-assisted technicolor model
• Detecting the neutral top-pion at future muon colliders
• The productions of the top-pions and top-Higgs associated with the charm quark at the hadron colliders
• Signatures of the neutral top-pion in $e\gamma$ collisions
• Neutral top-pion and the rare top decays $t\to c{l}_i{l}_j$
• The NLO corrections of $H_{TC}{\Pi }^0$and ${\Pi }^{+}{\Pi }^{-}$ pair production at the ILC in the TC2 model
• PGB pair production at LHC and ILC as a probe of the topcolor-assisted technicolor models
• Lepton flavor violating signals of the neutral top-pion in future lepton colliders
• The charged top-pion production associated with the bottom quark pair as a probe of the topcolor-assisted technicolor model at the LHC
• Production of the neutral top-pion ${\pi }_t^0$ in association with a high-$p_T$ jet at the $LHC$