Revisiting Bayesian constraints on the transport coefficients of QCD
Abstract
Multistage models based on relativistic viscous hydrodynamics have proven successful in describing hadron measurements from relativistic nuclear collisions. These measurements are sensitive to the shear and the bulk viscosities of QCD and provide a unique opportunity to constrain these transport coefficients. Bayesian analyses can be used to obtain systematic constraints on the viscosities of QCD, through methodical model-to-data comparisons. In this manuscript, we discuss recent developments in Bayesian analyses of heavy ion collision data. We highlight the essential role of closure tests in validating a Bayesian analysis before comparison with measurements. We discuss the role of the emulator that is used as proxy for the multistage theoretical model. We use an ongoing Bayesian analysis of soft hadron measurements by the JETSCAPE Collaboration as context for the discussion.
Keywords
Cite
@article{arxiv.2002.05337,
title = {Revisiting Bayesian constraints on the transport coefficients of QCD},
author = {J. -F. Paquet and A. Angerami 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 Y. He and M. Heffernan and U. Heinz and B. V. Jacak and P. M. Jacobs and S. Jeon and K. Kauder and W. Ke and E. Khalaj and M. Kordell and A. Kumar and T. Luo and M. Luzum and A. Majumder and M. McNelis and J. Mulligan and C. Nattrass and D. Oliinychenko and D. Pablos and L. G. Pang and C. Park 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 and Z. Yang},
journal= {arXiv preprint arXiv:2002.05337},
year = {2021}
}
Comments
4 pages, 1 figure, contribution to the Quark Matter 2019 proceedings