6–12 Apr 2025
Goethe University Frankfurt, Campus Westend, Theodor-W.-Adorno-Platz 1, 60629 Frankfurt am Main, Germany
Europe/Berlin timezone

Measurement of jet radius dependence of dijet momentum balance in Pb+Pb collisions with ATLAS

Not scheduled
20m
Goethe University Frankfurt, Campus Westend, Theodor-W.-Adorno-Platz 1, 60629 Frankfurt am Main, Germany

Goethe University Frankfurt, Campus Westend, Theodor-W.-Adorno-Platz 1, 60629 Frankfurt am Main, Germany

Poster Jets Poster session 1

Speaker

Patrik Novotny (Weizmann Institute of Science (IL))

Description

This poster presents measurements of the di-jet momentum balance in heavy-ion collisions, focusing on anti-$k_t$ jets with varying radii ($R=$ 0.2, 0.3, 0.4, 0.5, and 0.6) using the ATLAS detector at the LHC. The analysis uses 1.72 $\mathrm{nb}^{-1}$ of Pb+Pb data collected in 2018 and 260 $\mathrm{pb}^{-1}$ of $pp$ data collected in 2017, both at a center-of-mass energy of $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV. Results are provided for both per-yield and absolute-yield normalizations, with di-jet pair nuclear modification factors reported as functions of the transverse momenta of both leading and sub-leading jets. These measurements reveal insights into how jet energy loss and medium response vary with jet size, contributing to the understanding of parton-medium interactions and jet quenching mechanisms in the quark-gluon plasma.

Category Experiment
Collaboration (if applicable) ATLAS Collaboration

Author

Patrik Novotny (Weizmann Institute of Science (IL))

Presentation materials