Multi-system Bayesian constraints on the transport coefficients of QCD matter
D. Everett, W. Ke, J. -F. Paquet, G. Vujanovic, S. A. Bass, L. Du, C. Gale, M. Heffernan, U. Heinz, D. Liyanage, M. Luzum, A. Majumder, M. McNelis, C. Shen, Y. … 展开作者
D. Everett, W. Ke, J. -F. Paquet, G. Vujanovic, S. A. Bass, L. Du, C. Gale, M. Heffernan, U. Heinz, D. Liyanage, M. Luzum, A. Majumder, M. McNelis, C. Shen, Y. Xu, A. Angerami, S. Cao, Y. Chen, J. Coleman, L. Cunqueiro, T. Dai, R. Ehlers, H. Elfner, W. Fan, R. J. Fries, F. Garza, Y. He, B. V. Jacak, P. M. Jacobs, S. Jeon, B. Kim, M. Kordell, A. Kumar, S. Mak, J. Mulligan, C. Nattrass, D. Oliinychenko, C. Park, J. H. Putschke, G. Roland, B. Schenke, L. Schwiebert, A. Silva, C. Sirimanna, R. A. Soltz, Y. Tachibana, X. -N. Wang, R. L. Wolpert
备注：
51 pages, including 35 figures and 8 appendices, long companion paper to arXiv:2010.03928. A useful visualization tool to see the effect of varying individual model parameters on physical observables can be found at jetscape.org/sims-widget. Some references and discussion added. This version submitted for publication
We study the properties of the strongly-coupled quark-gluon plasma with a multistage model of heavy ion collisions that combines the T$_\mathrm{R}$ENTo initial condition ansatz, free-streaming, viscous relativistic hydrodynamics, and a relativistic hadronic transport. A model-to-data comparison with Bayesian inference is performed, revisiting assumptions made in previous studies. The role of parameter priors is studied in light of their importance towards the interpretation of results. We emphasize the use of closure tests to perform extensive validation of the analysis workflow before comparison with observations. Our study combines measurements from the Large Hadron Collider and the Relativistic Heavy Ion Collider, achieving a good simultaneous description of a wide range of hadronic observables from both colliders. The selected experimental data provide reasonable constraints on the shear and the bulk viscosities of the quark-gluon plasma at $T\sim$ 150-250 MeV, but their constraining power degrades at higher temperatures $T \gtrsim 250$ MeV. Furthermore, these viscosity constraints are found to depend significantly on how viscous corrections are handled in the transition from hydrodynamics to the hadronic transport. Several other model parameters, including the free-streaming time, show similar model sensitivity while the initial condition parameters associated with the T$_\mathrm{R}$ENTo ansatz are quite robust against variations of the particlization prescription. We also report on the sensitivity of individual observables to the various model parameters. Finally, Bayesian model selection is used to quantitatively compare the agreement with measurements for different sets of model assumptions, including different particlization models and different choices for which parameters are allowed to vary between RHIC and LHC energies.
Transport Properties of QGP within a Bayesian Holographic QCD Model
School of Nuclear Science and Technology, University of South China（南华大学核科学与技术学院）；Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University（华中师范大学夸克与轻子物理教育部重点实验室和粒子物理研究所）；INFN – Istituto Nazionale di Fisica Nucleare – Sezione di Bari（意大利国家核物理研究所巴里分部）；Institute of Modern Physics, Chinese Academy of Sciences（中国科学院近代物理研究所）
Bayesian constraints on the transport coefficients $η/s$ and $ζ/s$ from spin polarization in relativisitic heavy-ion collisions
Università di Firenze（佛罗伦萨大学）；Dipartimento di Fisica, Università di Firenze（佛罗伦萨大学物理系）；Variable Energy Cyclotron Centre（变能回旋加速器中心）；INFN Sezione di Firenze（佛罗伦萨意大利国家核物理研究所）
Minijet thermalization and jet transport coefficients in QCD kinetic theory
SUBATECH UMR 6457 (IMT Atlantique, Université de Nantes, IN2P3/CNRS)（SUBATECH UMR 6457（IMT大西洋学院，南特大学，IN2P3/法国国家科学研究中心））；Institute of Theoretical Physics, TU Wien（维也纳工业大学理论物理研究所）；MIT Center for Theoretical Physics – a Leinweber Institute, Massachusetts Institute of Technology（麻省理工学院莱因韦伯理论物理中心）；Institute for Theoretical Physics, University of Heidelberg（海德堡大学理论物理研究所）
Bayesian Inference of the Critical Endpoint in 2+1-Flavor System from Holographic QCD
Central China Normal University（华中师范大学）；University of South China（南华大学）；INFN – Istituto Nazionale di Fisica Nucleare – Sezione di Bari（意大利国家核物理研究所巴里分部）；The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen)（香港中文大学（深圳））；Frankfurt Institute for Advanced Studies（法兰克福高等研究院）；University of Chinese Academy of Sciences（中国科学院大学）
Bayesian Inference of Heavy-Quark Dissipation and Jet Transport Parameters from D-Meson observables in heavy-ion collisions at the LHC energies
School of Mathematics and Physics, China University of Geosciences（中国地质大学数学与物理学院）；Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University（华中师范大学夸克与轻子物理教育部重点实验室及粒子物理研究所）；Helmholtz Research Academy Hesse for FAIR (HFHF), GSI Helmholtz Center for Heavy Ion Physics（黑森FAIR亥姆霍兹研究学院（GSI重离子物理中心））；Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität（约翰·沃尔夫冈·歌德大学理论物理研究所）
