Physics performances for Z' searches at 3 TeV and 1.5 TeV CLIC

TL;DR

This paper evaluates the potential for discovering and measuring properties of Z' bosons at 1.4 and 3 TeV CLIC electron-positron colliders, considering detector and beam polarization effects.

Contribution

It provides a detailed analysis of Z' discovery prospects and coupling measurements at future high-energy colliders within a minimal anomaly-free model.

Findings

Potential to discover Z' at 3 TeV CLIC for certain parameters

Expected precision on Z' coupling measurements

Impact of detector performance and polarization on sensitivity

Abstract

Extra neutral gauge bosons (Z') are predicted in many extensions of the Standard Model (SM). In the minimal anomaly-free Z' model (AFZ'), the phenomenology is controlled by only three parameters beyond the SM ones, the Z' mass and two effective coupling constants g'_Y and g'_{BL}. We study the Z' 5-sigma discovery potential in e+e- collisions at 1.4 and 3 TeV CLIC. Assuming LHC discovers a Z' of 5 TeV mass, the expected accuracies on the Z'mu+mu- couplings are presented. We discuss also the requirements on detector performance and beam polarization.