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T: Fachverband Teilchenphysik

T 28: Top quarks: mass and jets

T 28.5: Vortrag

Dienstag, 31. März 2020, 18:00–18:15, H-HS XI

Pileup mitigation in jets with CMS — Anna Benecke, •Ksenia de Leo, Johannes Haller, Andreas Hinzmann, and Roman Kogler — Institut für Experimentalphysik, Universität Hamburg

The high instantaneous luminosity reached by the LHC during Run 2 has led to a large amount of data to analyse, at the cost of an increased number of additional collisions at each bunch crossing (pileup). An important challenge is the separation of particles produced in the interaction of interest from those resulting from pileup interactions.

This talk will present studies of the Pile Up Per Particle Identification (PUPPI) technique to mitigate effects from pileup on hadronic jets. The algorithm will be described together with challenges in its application. In addition, the latest tuning and validation studies will be presented in detail.