11th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

Data-driven $\hat{q}$ in a hard-soft factorized parton energy loss approach

29.03.2023, 09:40

20m

Cranach-Saal (Stadthalle)

Talk Jets and their modification in QCD matter Parallel: Jets and their modification in QCD Matter

Sprecher

Steffen A. Bass (Duke University)

Beschreibung

Interactions of high-energy partons with the strongly-coupled quark-gluon plasma lead to parton energy loss, as well as broadening of the partons' transverse and longitudinal momentum distributions. Energy loss and momentum broadening resulting from soft parton-plasma interactions can be quantified with transport coefficients, factorizing their effect from hard (perturbative) parton-plasma scatterings. We apply this factorized model of energy loss [1] to perform a Bayesian calibration against RHIC and LHC measurements, finding an enhancement of parton energy loss at low temperature compared to perturbative expectations. We highlight the model's ability to match perturbative calculations while inherently allowing for agnostic non-perturbative energy loss.

[1] T. Dai, J.-F. Paquet, D. Teaney and S.A. Bass, ``Parton energy loss in a hard-soft factorized approach,'' Phys.Rev.C 105 (2022) no.3, 034905

Affiliation

Duke University;
Vanderbilt University

Präsentationsmaterialien

HP2023_Bass.pdf