Systematic uncertainties, both from the experimental data and in the Bayesian emulation process, have yet to be quantified. At the same time, we should not be seduced by the appeal of a literal interpretation of these distributions as the allowed error budget. Results such as these represent an enormous advance in our ability to quantify key parameters such as the shear viscosity to entropy density ratio η / s. Bayes, which shows the range and correlations of various model parameters such as the switching temperature between hydrodynamic and transport calculations, the functional forms of the kinematic shear and bulk viscosities, etc., as constrained by (some of) the experimental data from the LHC at two different energies. This is illustrated in Figure 2, taken from Ref. While at LHC energies one still expects for these larger rapidities μ B ≪ T, it is nonetheless a new region in the phase diagram for studying hadrochemistry.
It should also be noted in this context that the recent addition of LHCb to the LHC heavy ion program opens a new window of investigation, with its superb particle identification capabilities at forward rapidities ( η ∼. Motivation for this effort is provided not only by the ongoing experimental program but also by the considerable expansion of these investigations that will be enabled by JINR NICA NICA, GSI FAIR FAIR , īoth hydrodynamic models and LQCD calculations face challenges in the presence of significant baryon chemical potential, but recent developments on both fronts suggest quantitative precision is within reach. There is an associated theory effort that will be essential in interpreting the data and mapping experimental observables to QCD calculations Petersen. The RHIC Beam Energy Scan II program STARoverview and fixed target measurements at the CERN SPS by NA61/SHINE NA61 and at GSI by HADES HADES are underway. In the next decade experimental measurements will be made in the energy range from √ s N N ∼ 40 GeV down to ∼2 GeV required to access the region of the phase diagram where μ B ∼ T. ĭiscovery of this feature along with the phenomena expected with a first-order phase transition would greatly expand our knowledge of the QCD phase diagram. It has long been predicted that thermal QCD exhibits a critical end point at finite μ B / T Barducci:1989wi Halasz:1998qr Berges:1998rc.
0 kommentar(er)
