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Model-independent search for the Abelian Z' boson in the Bhabha process

A. V. Gulov·V. V. Skalozub
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Abstract

Model-independent observables to pick out the Abelian Z' signal in the Bhabha process are introduced at energies >= 200 GeV. They measure separately the Z'-induced vector and axial-vector four-fermion contact couplings. The analysis of the LEP2 data constrains the value of the Z'-induced vector four-fermion coupling at the 2-sigma confidence level that corresponds to the Abelian Z' boson with the mass of order 1 TeV.

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A. V. Gulov, V. V. Skalozub. 2004-10-21. Model-independent search for the Abelian Z' boson in the Bhabha process. https://doi.org/10.1103/physrevd.70.115010

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