Simulating graviton production at hadron colliders

TL;DR

This paper introduces a versatile simulation tool for graviton production at hadron colliders, covering various models and signatures, validated against advanced QCD calculations.

Contribution

It provides a flexible implementation in MadGraph/MadEvent for simulating spin-2 particles interacting with the standard model, applicable to multiple TeV scale models.

Findings

Validated simulation results against NLO QCD calculations.

Generated inclusive graviton+jets samples for different models.

Supported diverse discovery signatures at colliders.

Abstract

Spin-2 particles and in particular gravitons are predicted in many new physics scenarios at the TeV scale. Depending on the details of models such new states might show up as a continuum, massless particles, or TeV scale resonances. Correspondingly, very different discovery signatures should be exploited, from the search of excesses in events with multi jets and large missing transverse energy, to resonances in weak boson or jet pair productions. We present a very general and flexible implementation in MadGraph/MadEvent of spin-2 particles interacting with the standard model particles via the energy momentum tensor, which encompasses all of the most popular TeV scale models featuring gravitons. By merging matrix elements with parton shower, we can generate inclusive samples of graviton+jets at the hadron colliders in several scenarios (ADD, zero-mass graviton and RS). We compare and validate our results against the corresponding next-to-leading order QCD calculations.