# Could pp Collisions in the LHC produce Gravitons? [duplicate]

Could proton-proton Collisions in the LHC produce Gravitons?

## marked as duplicate by Cosmas Zachos, John Rennie, Yashas, AccidentalFourierTransform, knzhouJun 3 '17 at 18:41

In the ADD model, the gravitons do not decay and therefore the signal would be missing energy, specifically $pp \to \text{jet} + \text{(missing energy)}$. There is a Standard Model (SM) background, $pp \to \text{jet} + Z$ where the $Z$ decays into a pair of neutrinos.
In the RS model, the gravitons decay into pairs of Standard Model particle. According to the Particle Data Group review, the most stringent limits come from decays into dilepton and diphoton. Here too there is a Standard Model background, the so-called Drell-Yan process $pp \to \text{jet} + Z^0/\gamma$ and then $Z/\gamma \to l^+ l^-$ for the dilepton.
• No actually, the graviton would appear as missing energy. More precisely, pp $\to$ jet + missing energy. But there is a Standard Model background: pp $\to$ Z + jet, where Z decays to two neutrinos. So the game is then to put clever cuts on the jet kinematics to exclude as much of the background as possible. – user154997 Jun 3 '17 at 15:11