Invisible $Z\prime$ as a probe of extra dimensions at the CERN LHC

TL;DR

This paper proposes that measuring the invisible decay width of a new heavy gauge boson, Z', at the CERN LHC can serve as an effective method to detect large extra dimensions predicted by warped extra-dimensional models.

Contribution

It introduces a novel collider-based approach to probe extra dimensions through the invisible decay signatures of a Z' boson at the LHC.

Findings

Z' decay into invisible particles can indicate extra dimensions.

Measuring Z' invisible decay width constrains extra-dimensional models.

Suggests new experimental strategies for testing extra dimensions.

Abstract

A class of extra dimensional models with a warped metric predict tunneling of a massive particle localized on our brane and escaping into additional dimensions. The experimental signature of this effect is the disappearance of the particle from our world, i.e. the particle $\to invisible$ decay. We point out that measurements of $Z\prime \to invisible$ decay width of a new heavy gauge boson $Z\prime$ at the CERN LHC can be effectively used to probe the existence of large extra dimensions. This result enhances motivations for a more sensitive search and study for this decay mode and suggests additional direction for testing extra dimensions in collider experiments.