Searching for a Leptophilic Z' and a 3-3-1 symmetry at CLIC

TL;DR

This paper evaluates the potential of the CLIC collider to discover or constrain leptophilic Z' bosons and Z' from 3-3-1 symmetry models, using optimized selection strategies for dilepton signals at 3 TeV.

Contribution

It provides the first detailed analysis of CLIC's sensitivity to leptophilic Z' and 3-3-1 Z' models with optimized cuts and specific luminosity benchmarks.

Findings

CLIC can detect a 1-3 TeV leptophilic Z' with less than 1 fb^{-1} of data.

CLIC can exclude Z' masses greater than 3 TeV for 3-3-1 models with 2 fb^{-1} of data.

Optimized cut strategies significantly enhance collider sensitivity.

Abstract

We derive the discovery potential of a leptophilic Z', and a Z' rising from a $SU(3) \times SU(3)_L \times U(1)_N$ symmetry at the Compact Linear Collider (CLIC), which is planned to host $e^+e^-$ collisions with 3 TeV center-of-mass energy. We perform an optimized selection cut strategy on the transverse momentum, pseudorapidity, and invariant mass of the dileptons in order to enhance the collider sensitivity. We find that CLIC can potentially reach a $5\sigma$ signal of a $1-3$~TeV leptophilic Z' with less than $1fb^{-1}$ of integrated luminosity. As for the Z' belonging to a 3-3-1 symmetry, CLIC will offer a complementary probe with the potential to impose $M_{Z^\prime} > 3$~TeV with $\mathcal{L}=2fb^{-1}$.