Determining the jet transport coefficient $\hat{q}$ of the quark-gluon plasma using Bayesian parameter estimation
Abstract
We present a new determination of , the jet transport coefficient of the quark-gluon plasma. Using the JETSCAPE framework, we use Bayesian parameter estimation to constrain the dependence of on the jet energy, virtuality, and medium temperature from experimental measurements of inclusive hadron suppression in Au-Au collisions at RHIC and Pb-Pb collisions at the LHC. These results are based on a multi-stage theoretical approach to in-medium jet evolution with the MATTER and LBT jet quenching models. The functional dependence of on jet energy, virtuality, and medium temperature is based on a perturbative picture of in-medium scattering, with components reflecting the different regimes of applicability of MATTER and LBT. The correlation of experimental systematic uncertainties is accounted for in the parameter extraction. These results provide state-of-the-art constraints on and lay the groundwork to extract additional properties of the quark-gluon plasma from jet measurements in heavy-ion collisions.
Cite
@article{arxiv.2106.11348,
title = {Determining the jet transport coefficient $\hat{q}$ of the quark-gluon plasma using Bayesian parameter estimation},
author = {J. Mulligan and A. Angerami and R. Arora and S. A. Bass and S. Cao and Y. Chen and J. Coleman and L. Cunqueiro and T. Dai and L. Du and R. Ehlers and H. Elfner and D. Everett and W. Fan and R. Fries and C. Gale and F. Garza and Y. He and M. Heffernan and U. Heinz and B. V. Jacak and P. M. Jacobs and S. Jeon and W. Ke and B. Kim and M. Kordell and A. Kumar and D. Liyanage and M. Luzum and A. Majumder and S. Mak and M. McNelis and C. Nattrass and D. Oliinychenko and C. Park and J. -F. Paquet and J. H. Putschke and G. Roland and B. Schenke and L. Schwiebert and C. Shen and A. Silva and C. Sirimanna and R. A. Soltz and Y. Tachibana and G. Vujanovic and X. -N. Wang and R. L. Wolpert and Y. Xu},
journal= {arXiv preprint arXiv:2106.11348},
year = {2021}
}
Comments
contribution to the 2021 QCD session of the 55th Recontres de Moriond