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

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

2000-12-25

arxiv.org/abs/hep-ph/0012332v1

Phys.Rev. D63 (2001) 115002

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1103/PhysRevD.63.115002

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.

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