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arXiv · 2208.14492

$R$-dependence of inclusive jet suppression and groomed jet splittings in heavy-ion collisions with ALICE

Hannah Bossi
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Abstract

Jets in relativistic heavy-ion collisions (HICs) interact with the quark-gluon plasma (QGP), leading to effects such as a suppression of jet yields and a modification of internal jet structure that are used to measure the properties of the QGP. These proceedings show the inclusive jet nuclear modification factors in Pb--Pb collisions in various centrality classes at $\sqrt{s_{\rm NN}}$ = 5.02 TeV recorded with the ALICE detector for resolution parameters up to $R$ = 0.6 for momenta down to 40 GeV/$c$. The analysis utilizes machine learning techniques to correct the large background in HICs, extending the measurement of inclusive jets to lower jet $p_{T}$ and larger $R$ than previously achieved in HICs at the LHC. A new suite of measurements characterizing groomed jet splittings using both the Soft Drop and Dynamical Grooming algorithms in central and semi-central Pb--Pb collisions will also be presented. The groomed jet radius, $θ_{\rm g}\equiv R_{\rm g}/R$, the groomed jet momentum fraction, $z_{\rm g}$, and the transverse momentum of the groomed splitting, $k_{\rm T, g}$ are also reported. All measurements are fully corrected through unfolding and compared to various theoretical calculations.

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Hannah Bossi. 2022-08-30. $R$-dependence of inclusive jet suppression and groomed jet splittings in heavy-ion collisions with ALICE. https://arxiv.org/abs/2208.14492

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