Bayesian quantification of strongly interacting matter with color glass condensate initial conditions

A global Bayesian analysis of relativistic Pb + Pb collisions at root s NN = 2 . 76 TeV is performed, using a multistage model consisting of an IP- GLASMA initial state, a viscous fluid dynamical evolution, and a hadronic transport final state. The observables considered are from the soft sector hadronic final state. Posterior and maximum a posteriori parameter distributions that pertain to the IP- GLASMA and hydrodynamic phases are obtained, including the shear and bulk specific viscosity of strong interacting matter. The first use of inference with transfer learning in heavy-ion analyses is presented, together with Bayes model averaging.