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

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.

7 pages, 5 figures, uses RevTeX4. The text of the paper is completely rewritten

References in corpus (2)

• Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion-Pair Production at 189-209 GeV at LEP
• Signals of the Abelian Z' boson within the analysis of the LEP2 data

Cited by in corpus (6)

• Identification of extra neutral gauge bosons at the International Linear Collider
• The Z' reconsidered
• Fitting of Z' parameters
• Z' signal from the LEP2 data
• Signals of Z' boson in the Bhabha process within the LEP2 data set
• Neural network predictions for Z' boson within LEP2 data set of Bhabha process