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T: Fachverband Teilchenphysik

T 42: Experimentelle Methoden I

T 42.5: Talk

Tuesday, March 26, 2019, 17:05–17:20, ST 1

Pileup mitigation with Constituent Subtraction — •Peter Berta and Lucia Masetti — JGU Mainz, Mainz, Germany

The ability to correct jet kinematics and substructure for simultaneous proton-proton interactions (pileup) largely determines the precision of measurements and searches at the Large Hadron Collider. In this talk, the Constituent Subtraction method for pileup mitigation in jets will be presented. This method corrects the jet inputs from the whole event before jet clustering based on the average pileup density in the event. Phenomenological studies showed potential for sizable improvements in performance for small- and large-radius jets compared to the previously used methods. Several improvements are presented, along with performance studies for expected pileup conditions at the LHC Run 2 and Run 3.