Associated production of neutral toppion with a pair of heavy quarks in $\gamma \gamma$ collisions

Abstract

We have studied a neutral toppion production process $\gamma \gamma \to f\bar{f}{\Pi }_t^0(f=t,b)$ in the topcolor-assisted technicolor(TC2) model. We find that the cross section of $\gamma \gamma \to t\bar{t}{\Pi }_t^0$ is much larger than that of $\gamma \gamma \to b\bar{b}{\Pi }_t^0$. On the other hand, the cross section can be obviously enhanced with the increasing of c.m.energy. With $\sqrt{s}=1600$ GeV, the cross section of $t\bar{t}{\Pi }_t^0$ production can reach the level of a few fb. The results show that $\gamma \gamma \to t\bar{t}{\Pi }_t^0\to t\bar{t}(t\bar{c})$ is the most ideal channel to detect neutral toppion due to the clean SM background. With such sufficient signals and clean background, neutral toppion could be detected at TESLA with high c.m.energy.

11 pages, 5 figures

References in corpus (5)

• Electroweak Model and Constraints on New Physics
• Determining the Chirality of Yukawa Couplings via Single Charged Higgs Boson Production in Polarized Photon Collision
• Production and decay of the neutral top-pion in high energy $e^{+}{e}^{-}$ 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

Cited by in corpus (6)

• Probing neutral top-pion via a flavor-changing process $\gamma \gamma \to t\bar{c}{\Pi }_t^0$
• Detecting the neutral top-pion at $e^{+}{e}^{-}$ colliders
• 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
• Associated production of a neutral top-Higgs with a heavy-quark pair in the γγcollisions at ILC