Searching for the elusive graviton

TL;DR

This paper reports a search for evidence of large extra dimensions via graviton production, setting limits on the fundamental Planck scale using collider data, which constrains theories beyond the Standard Model.

Contribution

First search for large extra dimensions in the photon plus missing energy channel at the Tevatron, establishing new limits on the Planck scale for 2-8 extra dimensions.

Findings

Excluded Planck scale from 970 GeV to 816 GeV at 95% confidence level.

Set new bounds on theories with large extra dimensions.

Used 2.7 fb-1 of collider data for analysis.

Abstract

We present a search for large extra dimensions in the single photon plus missing transverse energy channel (Kaluza-Klein graviton production) performed using 2.7 fb-1 of data collected by the D0 experiment at the Fermilab Tevatron collider. At 95% C.L., we set limits on the fundamental Planck scale M_{D} from 970 GeV to 816 GeV for two to eight extra dimensions.