The study of a flavor-changing neutral toppion production process $e^{+}{e}^{-}\to t\bar{c}{\Pi }_t^0$

Abstract

We have studied a flavor-changing toppion production process $e^{+}{e}^{-}\to t\bar{c}{\Pi }_t^0$ in the topcolor-assisted technicolor(TC2) model. The studies show that, with high centre of mass energy in TESLA collider, the production cross section of $e^{+}{e}^{-}\to t\bar{c}{\Pi }_t^0$ is at the order of magnitude 0.1 fb in most parameter regions of TC2 model and a few tens events of toppion can be produced each year. The resonance effect can enhance the cross section to a few fb when toppion mass is small. With clean background, the toppion events can possibly be detected at TESLA collider. On the other hand, we find that there exists a narrow peak near $m_t-m_c$ in the toppion-charm invariant mass distribution which could be clearly detected. Therefore, such a toppion production process $e^{+}{e}^{-}\to t\bar{c}{\Pi }_t^0$ provides a unique chance to detect toppion events and test the TC2 model.

4 Pages. 5 figures

References in corpus (3)

• Electroweak Model and Constraints on New Physics
• Production and decay of the neutral top-pion in high energy $e^{+}{e}^{-}$ colliders
• The physics goals of the TESLA project

Cited by in corpus (18)

• The rare top quark decays $t\to cV$ in the topcolor-assisted technicolor model
• Probing neutral top-pion via a flavor-changing process $\gamma \gamma \to t\bar{c}{\Pi }_t^0$
• Production of the neutral toppion at the e gamma colliders
• Associated production of neutral toppion with a pair of heavy quarks in $\gamma \gamma$ collisions
• The flavor-changing single-top quark production in the littlest Higgs model with T parity at the LHC
• Detecting the neutral top-pion at $e^{+}{e}^{-}$ colliders
• Production of the top-pions at the THERA collider based $\gamma p$ collisions
• The flavor-changing top-charm quark production in the littlest Higgs model with T parity at the ILC
• $H_{TC}{\Pi }^0$ and ${\Pi }^{+}{\Pi }^{-}$ pair productions at the planned $e^{+}{e}^{-}$ colliders in the topcolor-assisted technicolor model
• Study of the single neutral top-pion production process at $\gamma \gamma$ collider
• 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
• Technicolor corrections to b\bar{b} -> W^{\pm}π^{\mp}_t at the CERN Large Hadron Collider
• Lepton flavor violating signals of the neutral top-pion in future lepton colliders
• Searches for the technicolor signatures via gg --> W^{\pm}π_t^{\mp} at the Large Hadron Collider
• The flavor-changing top-charm associated productions at ILC in littlest Higgs model with T parity
• Associated production of a neutral top-Higgs with a heavy-quark pair in the γγcollisions at ILC
• The single t-quark productions via the flavor-changing processes in the topcolor-assisted technicolor model at the hadron colliders