Gauge Boson - Gauge Boson Scattering in Theories with Large Extra Dimensions

TL;DR

This paper analyzes gauge boson scattering processes mediated by graviton exchange in theories with large extra dimensions, proposing experimental signatures and limits on the gravitational scale at future colliders.

Contribution

It provides a detailed study of gauge boson scattering amplitudes due to graviton exchange in large extra dimension models and estimates collider bounds on the gravitational scale.

Findings

NLC can probe gravitational scale m_D > 3 TeV

LHC can probe gravitational scale m_D > 6 TeV

Gauge boson scattering signatures are viable for detecting extra dimensions

Abstract

We consider the scattering amplitudes of the form V_1 V_2 -> V_3 V_4, where V_i=\gamma, Z, W or g(=gluon) are the Standard Model gauge bosons, due to graviton exchange in Kaluza-Klein theories with large extra dimensions. This leads to a number of experimentally viable signatures at high energy leptonic and hadronic colliders. We discuss the observability or future limits on the scale of the gravitational interactions (m_D), that may be obtained at an e+e- Next Linear Collider (NLC) and at the LHC, by studying some of these type of gauge boson scattering processes. We find that the attainable limits through these type of processes are: m_D > 3 TeV at the NLC and m_D > 6 TeV at the LHC.