Neutral Triple Gauge Boson production in the large extra dimensions model at linear colliders

TL;DR

This paper investigates how large extra dimensions influence neutral triple gauge boson production at future linear colliders, providing potential signals for new physics and setting limits on the fundamental Planck scale.

Contribution

It analyzes the impact of Kaluza-Klein gravitons on neutral triple gauge boson processes at linear colliders, a novel approach for probing large extra dimensions.

Findings

KK graviton exchange significantly affects e9rzz at small M_S

Largest effect observed on e9errr at higher M_S

Discovery limits on M_S reach 6-9 TeV at 3 TeV CLIC

Abstract

We consider the neutral triple gauge boson production process in the context of large extra dimensions (LED) model including the Kaluza-Klein (KK) excited gravitons at future linear colliders, say ILC(CLIC). We consider $\gamma\gamma\gamma, \gamma\gamma Z, \gamma Z Z$ and $ZZZ$ production processes, and analyse their impacts on both the total cross section and some key distributions. These processes are important for new physics searches at linear colliders. Our results show that KK graviton exchange has the most significant effect on \eerzz among the four processes with relatively small $M_S$, while it has the largest effect on \eerrr with larger $M_S$. By using the neutral triple gauge boson production we could set the discovery limit on the fundamental Plank scale $M_S$ up to around 6-9 TeV for $\delta$ = 4 at the 3 TeV CLIC.