COMETA Colloquium: Ludovic Scyboz

Monday 29 Sept 2025, 14:00 → 16:00 Europe/Zurich

Zoom room: https://cern.zoom.us/j/63628931616?pwd=YnlaRzlQck84b2szN2lPUlVqOGoxZz09

 

This event is organised by the COMETA COST Action, a EU-funded networking initiative that promotes knowledge sharing and cooperation across the theory, experiment, and ML communities, with the aim of improving the measurement and interpretation of multiboson processes at the LHC.

Find recordings of all COMETA Colloquia on our youtube channel @multibosons!

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14:00 → 15:00 Jet algorithms, flavour & infrared safety

Most particle-collider analyses use clustering algorithms to bundle together the sprays of radiation we observe in the detector, to define so-called “jets”. These objects are used as input to the analyses, but they are in fact necessary from a theoretical viewpoint, as they regulate the divergences that arise naturally in Quantum Chromodynamics (a concept called infrared safety). For a long time it was unclear how to define the quantum “flavour” of a jet, reflecting the flavour of the quark initiating the jet, in a similarly safe way. In this talk I will review recent developments in the design of flavoured jet algorithms, with a focus on infrared safety and applicability in the experiments. I will discuss a range of recently-proposed flavoured jet algorithms whose labels may in principle be used as input to train ML taggers.

Speakers: Ludovic Michel Scyboz, Ludovic Michel Scyboz (Max-Planck-Institut fur Physik (DE)), Ludovic Michel Scyboz (Monash University), Ludovic Scyboz (University of Oxford), Ludovic Scyboz

COMETA_Scyboz.pdf