Conveners
Parallel BES: 1
- Alexandre Suaide (IFUSP)
Parallel BES: 2
- Marco Van Leeuwen (Nikhef National institute for subatomic physics (NL))
Description
Parallel session BES
Quantum Chromodynamics calculations predict that under sufficiently high temperature or energy density nuclear matter undergoes a phase transition from hadrons to a state of deconfined quarks and gluons, the Quark-Gluon Plasma. The properties of this novel state of matter have been extensively studied in high-energy nuclear collisions at RHIC.
Two-particle correlations at small relative...
Anisotropic flow ($v_n$) measurements can provide important constraints for initial state models and for precision extraction of the temperature dependence of the specific shear viscosity $\eta/s$. Recent STAR measurements for rapidity even dipolar flow $v^{even}_1$ confirm the important influence of momentum conservation, as well as the characteristic dependencies on $\sqrt{s_{NN}}$ ,...
The recent BES data of the energy dependent $κσ^2$ for net protons in Au+Au collisions presented large deviations from the statistical baselines at lower collision energies, and non-monotonic behavior at around 20 GeV, which indicates possible signals for the existence of the QCD critical point [1].
In our recent paper [2], we introduce a freeze-out scheme to the dynamical models near the...
Fluid dynamical fluctuations drive a system constantly out of equilibrium in connection with dissipative properties such as shear and bulk viscosity. The interaction of the fluctuations leads to a renormalization in the equation of state and in the transport coefficients. These effects are particularly important near phase transitions and in small systems. In an era of the high-precision...
Supervised learning with a deep convolutional neural network is used to identify the QCD equation of state (EoS) employed in relativistic hydrodynamic simulations of heavy-ion collisions. The final-state particle spectra \rho(p_T,\Phi) provide directly accessible information from experiments. High-level correlations of \rho(p_T,\Phi) learned by the neural network act as an "EoS-meter",...
The main physics goal of the NA61/SHINE ion program is the study of the properties of the onset of deconfinement and the search for signatures of the critical point of strongly interacting matter. These goals are pursued by performing an energy and system size scan.
In this talk recent analysis results of Ar+Sc and Be+Be interactions at SPS energies are discussed. Rapidity and transverse mass...
Relativistic heavy-ion collisions produce a state of matter with surprising fluid properties. The study of the vorticity allows us to access a fundamental property of this matter. The STAR experiment at RHIC has observed for the first time a significant alignment between the angular momentum of the medium produced in non-central collision and the spin of $\Lambda$($\overline{\Lambda}$)...
Spin alignment of vector mesons (e.g. K$^{\star}$$^{0}$) and global polarization of hyperons (e.g. $\Lambda$) in non-central high energy heavy-ion collisions could occur due to large initial angular momentum of the system. The spin alignment could also occur during the process of hadronization. The spin alignment of K$^{\star}$$^{0}$ is measured using a parameter $\rho_{00}$ characterising...
Fluctuations of various observables in heavy-ion collisions at ultra-relativistic energies have been extensively studied in literature as they provide important signals regarding the formation of the Quark Gluon Plasma. In addition to being sensitive to the QCD phase transitign, the multiplicity fluctuations affect other event-by-event measurements. In this work, the centrality-dependence and...
