Search for a Z' at the Z resonance
1993
Abstract The search for an additional heavy
gauge bosonZ′ is described. The models considered are based on either a superstring-motivated E 6 or on a
left-right symmetryand assume a minimal
Higgs sector. Cross sections and asymmetries measured with the L3 detector in the vicinity of the Z resonance during the 1990 and 1991 running periods are used to determine limits on the Z-Z′
gauge bosonmixing angle and on the Z′ mass. For Z′ masses above the
direct limits, we obtain the following allowed ranges of the mixing angle, θ M at the 95% confidence level: −0.004 ⪕ θ M ⪕ 0.015 for the χ model, −0.003 ⪕ θ M ⪕ 0.020 for the ψ model, −0.029 ⪕ θ M ⪕ 0.010 for the η model, −0.002 ⪕ θ M ⪕ 0.020 for the LR model,
Keywords:
-
Correction
-
Source
-
Cite
-
Save
26
References
33
Citations
NaN
KQI