High Energy / Nuclear Theory / RIKEN Seminars

[RBRC seminar] Extraction of qhat in heavy-ion collisions with a Bayesian analysis

by Yi Chen (CERN)

The jet transport coefficient qhat is a characterization of the properties of the interaction between high energy parton and the quark-gluon plasma, created during relativistic heavy-ion collisions.
The talk will focus on a recent analysis [1] by the JETSCAPE Collaboration of the dependence of qhat on jet energy, jet virtuality, and medium temperature.
The analysis utilizes Bayesian parameter estimation techniques to compare theoretical calculation and experimental data of inclusive hadron suppression spanning a wide range of transverse momentum, at both RHIC and LHC center-of-mass energies.
The correlation of the experimental uncertainties must be treated correctly to the best of our knowledge, and it is a central and important piece of this analysis.
Simulation is performed using the JETSCAPE framework, with a multi-stage approach based on the MATTER and LBT jet quenching models.
We will also discuss prospects of additional analyses to better constrain additional properties of the quark-gluon plasma.