Detecting the neutral top-pion at $e^{+}{e}^{-}$ colliders

Abstract

We investigate some processes of the associated production of a neutral top-pion ${\Pi }_t^0$ with a pair of fermions($e^{+}{e}^{-}\to f\bar{f}{\Pi }_t^0$) in the context of top-color-assisted technicolor(TC2) theory at future $e^{+}{e}^{-}$ colliders. The studies show that the largest cross sections of the processes $e^{+}{e}^{-}\to f^{\prime }\overline{f^{\prime }}{\Pi }_t^0(f^{\prime }=u,d,c,s,\mu ,\tau )$ could only reach the level of 0.01fb, we can hardly detect a neutral top-pion through these processes. For the processes $e^{+}{e}^{-}\to e^{+}{e}^{-}{\Pi }_t^0$, $e^{+}{e}^{-}\to t\bar{t}{\Pi }_t^0$ and $e^{+}{e}^{-}\to b\bar{b}{\Pi }_t^0$, the cross sections of these processes are at the level of a few fb for the favorable parameters and a few tens, even hundreds, of neutral top-pion events can be produced at future $e^{+}{e}^{-}$ colliders each year through these processes. With the clean background of the flavor-changing $t\bar{c}$ channel, the top-pion events can possibly be detected at the planned high luminosity $e^{+}{e}^{-}$ colliders. Therefore, such neutral top-pion production processes provide a useful way to detect a neutral top-pion and test the TC2 model directly.

13 pages, 4 figures

References in corpus (9)

• Strong Dynamics and Electroweak Symmetry Breaking
• Higgs Radiation off Top Quarks at the Tevatron and the LHC
• Next-to-Leading Order Results for t-tbar-h Production at the Tevatron
• The rare top quark decays $t\to cV$ in the topcolor-assisted technicolor model
• Probing Topcolor-Assisted Technicolor from Top-Charm Associated Production at LHC
• Top quark associated production of topcolor pions at hadron colliders
• The study of a flavor-changing neutral toppion production process $e^{+}{e}^{-}\to t\bar{c}{\Pi }_t^0$
• 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

Cited by in corpus (5)

• Study of the single neutral top-pion production process at $\gamma \gamma$ collider
• $H_{TC}{\Pi }^0$ and ${\Pi }^{+}{\Pi }^{-}$ pair productions at the planned $e^{+}{e}^{-}$ colliders in the topcolor-assisted technicolor model
• The productions of the top-pions and top-Higgs associated with the charm quark at the hadron colliders
• Yukawa Corrections to gamma gamma --> b\bar{b} in the Topcolor Assisted Technicolor Models
• Lepton flavor violating signals of the neutral top-pion in future lepton colliders