12th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

New measurements of inclusive jet suppression and jet $v_2$ in Pb--Pb collisions with ALICE

24 Sept 2024, 15:00

20m

Convention Hall 1

Oral presentation 1. Jets modification and medium response Parallel 17: jet R_AA, correlation

Speaker

Aimeric Landou (Centre National de la Recherche Scientifique (FR))

Description

We report new ALICE measurements of inclusive charged-particle jet yield suppression $R_\mathrm{AA}$ and jet azimuthal anisotropy $v_2$ in Pb--Pb collisions. The $R_\mathrm{AA}$ measurement is carried out in central Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV, with uncorrelated background corrected statistically using an event-mixing approach. The charged-particle jet $R_\mathrm{AA}$ measurements have high precision over a broad kinematic range, including very low jet $p_{\mathrm T}$, for jet resolution parameters $R=0.2$ to 0.5. Comparison of these $R_\mathrm{AA}$ measurements and their $R$ dependence to theoretical calculations provide new insight into jet quenching phenomenology and its underlying mechanism. We also report measurements of inclusive charged-particle jet $v_2$ in semi-central Pb--Pb collisions using new Run 3 data, quantifying the jet yield dependence relative to event-plane orientation that may probe the pathlength dependence of jet energy loss.

Presentation materials

20240924_AIMERIC_LANDOU_Hard_Probes.pdf