Revisiting Bayesian constraints on the transport coefficients of QCD
- Duke Univ., Durham, NC (United States). Dept. of Physics; JETSCAPE Collaboration, et al.; Duke Univ., Durham, NC (United States)
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. Furthermore, 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.
- Research Organization:
- Duke Univ., Durham, NC (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- Contributing Organization:
- JETSCAPE Collaboration
- Grant/Contract Number:
- FG02-05ER41367
- OSTI ID:
- 1849602
- Alternate ID(s):
- OSTI ID: 1760963
- Journal Information:
- Nuclear Physics. A, Journal Name: Nuclear Physics. A Journal Issue: C Vol. 1005; ISSN 0375-9474
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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