About
We will discuss the first momentum scale (kT) scan of the Lund Jet Plane (LJP) in heavy-ion collisions by CMS. The LJP is a two-dimensional representation of the phase space of emissions inside a jet constructed using iterative Cambridge-Aachen declustering. Its measurement in pp collisions allows to constrain the different ingredients of the parton shower and hadronization in a modular fashion. In heavy-ion collisions, the Quark Gluon Plasma is expected to affect the parton shower and modify the measured LJP relative to pp collisions. A kT scan of the Lund plane allows us to explore the scale dependence of the jet-QGP interactions. Our measurement was designed to test the validity of the factorisation between the early vacuum and QGP-induced stages of jet evolution in heavy ion collisions, which is an assumption of several jet quenching models.
In addition, we'll discuss a new method that uses the LJP to improve the modelling in simulation of large-R multi-prong jets due to the decay of heavy resonances into multiple SM quarks. The method has interesting applications also for jets in heavy-ion collisions.
Refreshments will be served at 10h30 .
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The talk
Credits and licence
- Institution
- CERN
- Department
- LHC Seminar
- Speaker
- Vangelis Vladimirov
- Year
- 2025
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed