Matter-gravity interaction in a multiply warped braneworld,

TL;DR

This paper investigates how a doubly warped braneworld model affects graviton modes and their interactions, potentially enhancing signals for extra dimensions in collider experiments like the LHC.

Contribution

It demonstrates that a sixth dimension in a multiply warped spacetime amplifies graviton KK modes and their couplings, differing from the standard 5D Randall-Sundrum model.

Findings

Enhanced concentration of graviton KK modes in doubly warped models

Larger couplings of massive KK gravitons with matter fields

Implications for detecting extra dimensions at the LHC

Abstract

The role of a bulk graviton in predicting the signature of extra dimensions through collider-based experiments is explored in the context of a multiply warped spacetime. In particular it is shown that in a doubly warped braneworld model, the presence of the sixth dimension, results in enhanced concentration of graviton Kaluza Klein (KK) modes compared to that obtained in the usual 5-dimensional Randall-Sundrum model. Also, the couplings of these massive graviton KK modes with the matter fields on the visible brane turn out to be appreciably larger than that in the corresponding 5- dimensional model. The significance of these results are discussed in the context of KK graviton search at the Large Hadron Collider (LHC).