Renormalizability and the model independent observables for abelian Z' search

TL;DR

This paper introduces model-independent observables for detecting abelian Z' signals in e+ e- collisions, based on renormalization group relations, and derives bounds at 500 GeV.

Contribution

It develops new observables for Z' searches that are grounded in renormalization group relations, extending previous variable proposals.

Findings

Derived bounds on observables at 500 GeV

Extended variables for Z' detection

Based on renormalization group relations

Abstract

The observables useful for the model independent search for signals of the abelian Z' in the processes e^+ e^- \to {\bar f}f are introduced. They are based on the renormalization group relations between the Z' couplings to the Standard Model particles developed recently and extend the variables suggested by Osland, Pankov and Paver. The bounds on the values of the observables at the center-of-mass energy \sqrt{s} = 500GeV are derived.