Detecting the non-universal gauge boson $Z^{'}$ at high-energy $e^{+}e^{-}$ collider

Details Detecting the non-universal gauge boson $Z^{'}$ at high-energy $e^{+}e^{-}$ collider Detecting the non-universal gauge boson $Z^{'}$ at high-energy $e^{+}e^{-}$ collider

2004-04-03

arxiv.org/abs/hep-ph/0404031v1

J.Phys.G30:963-970,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 2 figures

Scientific paper

10.1088/0256-307X/21/8/002

In the context of topcolor-assisted techicolor($TC2$) models, we investigate the feasibility of detecting the non-universal gauge boson $Z^{'}$ in the future high-energy linear $e^{+}e^{-}$ collider($LC$) experiments by performing $\chi^{2}$ analysis via studying its virtual effects on the processes $e^{+}e^{-}\to f\bar{f}$ with $f=\tau$, $\mu$, b, and c. We find that the non-universal gauge boson $Z^{'}$ is most sensitive to the process $e^{+}e^{-}\to \tau\bar{\tau}$. Discovery limits of the $Z^{'}$ mass $M_{Z^{'}}$ can be enhanced by the suitably polarized beams. If we assume that polarization of electron beam and positron beam are 80% and 60%, the $LC$ experiment with $\sqrt{s}=500GeV$ and $\pounds_{int}=340fb^{-1}$ can explore $M_{Z^{'}}$ up to 8$TeV$ for the coupling parameter $K_{1}\leq$0.8 at 95% $CL$.

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