Forward Jet Vertex Tagging: A new technique for the identification and rejection of forward pileup jets

The suppression of pileup forward jets is crucial for a variety of physics analyses at the LHC, ranging from VBF Higgs production to SUSY searches. A novel forward pileup tagging technique that exploits the correlation between central and forward jets originating from pileup interactions is presented. Tracking and vertex information in the central $\eta$ region is used to indirectly tag and reject forward pileup jets that are back-to-back to central pileup jets. The pileup suppression power observed in Pythia8 simulated events increases with jet $_{PT}$ and ranges between a 30% and 60% pileup jet removal for 90% jet selection efficiency for jets between 20 and 50 GeV.