Hard Probes 2018: International Conference on Hard & Electromagnetic Probes of High-Energy Nuclear Collisions

Event-by-event jet suppression, anisotropy and hard-soft tomography

4 Oct 2018, 09:40

20m

Aix-Les-Bains, Savoie, France

2a) Jets and high-pT hadrons (TALK) Parallel 2

Speaker

Mr Yayun He (CCNU)

Description

Event-by-event jet suppression, anisotropy and hard-soft tomography

Xin-Nian Wang${}^{1,2,3}$ , Shanshan Cao${}^4$, Yayun He${}^1$ and Tan Luo${}^1$

A consistent description of high $p_T$ particle suppression ($R_{AA}$) and azimuthal anisotropy $v_2$ has been a puzzle in the study of jet quenching, pointing to some non-perturbative native of jet transport. Event-by-event single inclusive jet suppression and azimuthal anisotropy are studied within the Linear Boltzmann Transport (LBT) model for jet propagation in QGP medium from 3+1D hydrodynamic evolution with fluctuating initial conditions. We demonstrate that LBT can describe both the single inclusive jet suppression and azimuthal anisotropy with a single adjustable parameter- effective strong coupling constant ${\alpha }_s$. This indicate observed jet quenching puzzle might be caused by non-perturbative phenomenon in hadronization at intermediate $p_T$. We also studied the energy and centrality dependence and the effect of fluctuation as compared to a smooth hydro evolution. A linear relationship is found between high $p_T$ jet anisotropy due to jet quenching and soft hadron anisotropy from hydrodynamic expansion

${}^1$ Central China Normal University, ${}^2$ Lawrence Berkeley National Laboratory,
${}^3$ University of California, Berkeley, ${}^4$ Wayne State University.

Presentation materials

YayunHe_HP2018.pdf