Graviton Signals in Central Production at the LHC

TL;DR

This paper investigates the potential to detect graviton signals from large extra dimensions at the LHC through central production in dilepton and diphoton channels, analyzing backgrounds and feasibility.

Contribution

It provides a detailed analysis of graviton signal detection prospects in central production at the LHC, including background suppression and sensitivity estimates.

Findings

LHC at 14 TeV can probe gravity scales up to 3.6 TeV with 100 fb$^{-1}$

Higher luminosity extends reach to 4.4 TeV

Central production offers a clean environment for new physics searches

Abstract

In this paper, we study central production, in the inclusive case, to look for graviton signals in large extra dimensional model using dilepton and diphoton channels. We carefully analyze signal and possible Standard Model background processes and study the feasibility of such new physics searches in a relatively clean environment as in central production where the proton fragments are mostly emitted in the forward direction, and there is a clear rapidity gap between them and the centrally produced system. Our analysis shows that the LHC with 14 TeV center of mass energy and 100 fb$^{-1}$ (300 fb$^{-1}$) of integrated luminosity can probe the effective gravity scale up to 3.6 TeV (4.4 TeV) in both the dilepton and diphoton channels.