期刊
PHYSICAL REVIEW C
卷 94, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.94.024907
关键词
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资金
- National Science Foundation
- US Department of Energy's Office of Science
- US Department of Energy [DE-FG02-05ER41367]
- DOE/NNSA Stockpile Stewardship Graduate Fellowship [DE-FC52-08NA28752]
- US Department of Energy, Office of Science, Office for Nuclear Physics Office [DE-SC0004286]
We quantitatively estimate properties of the quark-gluon plasma created in ultrarelativistic heavy-ion collisions utilizing Bayesian statistics and a multiparameter model-to-data comparison. The study is performed using a recently developed parametric initial condition model, TRENTo, which interpolates among a general class of particle production schemes, and a modern hybrid model which couples viscous hydrodynamics to a hadronic cascade. We calibrate the model to multiplicity, transverse momentum, and flow data and report constraints on the parametrized initial conditions and the temperature-dependent transport coefficients of the quark-gluon plasma. We show that initial entropy deposition is consistent with a saturation-based picture, extract a relation between the minimum value and slope of the temperature-dependent specific shear viscosity, and find a clear signal for a nonzero bulk viscosity.
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