Jet substructure observables provide unique probes of the properties of the Quark-Gluon Plasma (QGP).
In this talk we report new measurements of groomed jet substructure in central Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV.
We present the first application of dynamical grooming in heavy-ion collisions to search for excess $k_{\mathrm{T,g}}$ emissions, which is a signature of large-angle scattering of jets off quasi-particles in the QGP.
We present additional measurements employing both the soft drop and dynamical grooming algorithms in 0--10\% central Pb--Pb, 30--50\% semicentral Pb--Pb, and pp collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV.
Results from the various grooming methods and parameters are compared.
Comparisons to model calculations are also presented.
The techniques developed for this measurement are more broadly applicable to jet substructure, which we likewise discussed.
Volume 438 -
11th International Conference on Hard and Elecctromagnetic Probes of High-Energy Nuclear Collisions (HardProbes2023) -
Jets and their modification in QCD matter
Exploring medium properties with hard transverse momentum splittings using groomed jet substructure measurements in Pb-Pb collisions with ALICE
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Published on:
February 16, 2024
Abstract
DOI: https://doi.org/10.22323/1.438.0136
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.