Spin Identification of the Randall-Sundrum Graviton at the LHC

TL;DR

This paper proposes a method using angular asymmetry measurements in Drell-Yan processes at the LHC to identify the spin-2 nature of the Randall-Sundrum graviton resonance, with potential detection up to several TeV depending on luminosity.

Contribution

It introduces a novel angular asymmetry observable to distinguish the spin-2 Randall-Sundrum graviton from other spins at the LHC.

Findings

Spin-2 identification possible up to 1.6 TeV at 10 fb^{-1}

Identification extends to 3.2 TeV at 100 fb^{-1}

Method effective for different graviton coupling strengths

Abstract

Using as basic observable an angular-integrated asymmetry to be measured in Drell-Yan lepton-pair production at the LHC, we discuss the identification reach on the spin-2 of the lowest-lying Randall-Sundrum resonance predicted by gravity in one warped extra dimension, against the spin-1 and spin-0 hypotheses. Numerical results indicate that, depending on the graviton coupling strength to the standard model particles, such a spin-2 identification can extend up to mass scales of 1.0-1.6 TeV and 2.4-3.2 TeV for LHC integrated luminosities of 10 and 100 fb^{-1}, respectively.