Hot Jets: Advancing the Understanding of High Temperature QCD with Jets

Flow Effects on Charged Hadron RAA and vn in Heavy Ion Collisions

9 Jan 2025, 10:30

30m

ICASU seminar room (next to room 230) (Loomis Lab (UIUC))

Morning Session

Speaker

Joseph Bahder

Description

We discuss the flow-induced anisotropic contribution to jet-broadening, "jet drift", showing that this effect results in a deflection of hard partons, and thus jets, in the direction of the medium flow. Next, we study this effect in both toy models and a full-fledged hybrid transport simulation of $\sqrt{s}$ = 5.02 TeV PbPb collisions at the LHC, tracking trajectories of hard partons with perturbative energy loss and drift. We show that sub-eikonal anisotropic effects, including flow-mediated jet drift, are sensitive to properties of the medium that traditional eikonal isotropic effects are insensitive to, demonstrating that including these effects leads to modifications to jet and hard particle observables that survive averaging over events. We show that jet drift leads to an enhancement of the anisotropic flow ($v_n$) of charged hadrons and modification of the acoplanarity of dihadrons. Finally, we discuss the implications for jet substructure and medium response effects.

Presentation materials

2025.01.09_UIUC_APE.pdf

2025.01.09_UIUC_APE.pptx