Jet and Missing Transverse Energy Performance at CMS High Level Trigger

The CMS Experiment at the CERN LHC has a two level trigger system to filter events that are stored for further analysis. The Level-1 trigger is based on fast electronics. The events passing the Level-1 trigger have to then go through the High Level Trigger (HLT), which is running on a computing farm. The HLT menu consists of a large number of HLT paths based on various selections on reconstructed physics objects in a given event. The object reconstruction at the HLT is optimized to run faster due to the timing constraints and, therefore, less accurate than the offline reconstruction. It is crucial to properly reconstruct jets and missing transverse energy at the high level trigger for the successful fulfillment of the physics program at the CMS experiment, since many physics signatures at the LHC include jets and missing transverse energy in their final state. We present the performance of the jet and missing transverse energy reconstruction at HLT during the LHC Run-2. The performances are measured in terms of efficiencies with respect to that of offline reconstructed objects.