2 00 4 Detecting the non - universal gauge boson Z ′ at high - energy e + e − collider
نویسنده
چکیده
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 χ analysis via studying its virtual effects on the processes e+e− → ff with f = τ , μ, b, and c. We find that the non-universal gauge boson Z ′ is most sensitive to the process e+e− → ττ . Discovery limits of the Z ′ mass MZ′ 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 √ s = 500GeV and £int = 340fb −1 can explore MZ′ up to 8TeV for the coupling parameter K1 ≤0.8 at 95% CL. PACS number(s):12.60Fr, 14.80.Mz, 12.15.Lk ∗E-mail:[email protected]
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