I will give a brief overview of recent progress on the bulk thermodynamic properties of hot and dense strongly interacting matter, from first principle lattice QCD simulations. In particular, I will discuss the related topics of the equation of state, the phase diagram and fluctuations of conserved charges in the grand canonical ensemble.
Lattice simulations of QCD at finite temperature are prohibited by a strong sign problem,
so that little first principles information is available on the QCD phase diagram.
However, over the last two decades, lattice as well as functional methods have collected increasingly abundant and reliable information about the phase structure of QCD
with parameters tunedd away from the physical...
We present the recent PHENIX preliminary data on centrality dependence of two-pion Bose-Einstein correlation functions measured in \sqrt{sNN} = 200 GeV Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC). The data are well described by assuming the source to be a Lจฆvy-stable distribution. The Lévy parameters, \lambda, R, \alpha are measured in 23 bins of transverse mass (mT) for 6...
The Multi-Purpose Detector (MPD) is one of the two heavy-ion experiments under construction in the Nuclotron-based Ion Collider fAcility (NICA) at the Joint Institute for Nuclear Research (JINR) in Dubna, which is designed to run in the collider mode. In its initial stage of operation, planned to start at the end of 2023, the MPD will study collisions of heavy ions in the energy range...
A central question in the phenomenology of relativistic heavy-ion collisions is how the initial state of the quark-gluon plasma (QGP) is precisely shaped. This contribution reports on recent groundbreaking advances concerning our understanding of the initial state of the QGP resulting from global Bayesian analyses (and their shortcomings) of soft probes. Ideas for future directions of...
In this invited talk I will first present an overview on the theory of hard probes, one of the major tools to study the properties of the quark-gluon plasma in heavy-ion collisions. Then, I will focus on some recent theoretical developments in our understanding of one main type of hard probes: QCD jets.
Jets are useful probes of the QGP produced in heavy-ion (HI) collisions because the hard scattered partons lose energy with the medium when they traverse through it, a phenomena called jet quenching, which results in the suppression of jet yields and modification of internal jet structure. Measurements of jet quenching will be shown using new observables and techniques in order to access new...
Quarkonium production has long been identified as one of the golden signatures of the quark-gluon plasma (QGP) formation in heavy-ion collisions.
The LHC data from small colliding systems, namely pp and p--Pb, showed unexpected QGP-like behaviours when selecting high multiplicity events. These results include the non-zero elliptic flow of identified hadrons and the strangeness enhancement...
Heavy ion collisions allow access to novel QCD and QED studies in a laboratory. This opportunity is actively pursued by the ATLAS and CMS experiments at the LHC and is an integral part of the experimental program of these collaborations. Precision measurements of the properties of quark-gluon plasma (QGP) and the strong electromagnetic fields produced in heavy ion collisions at high energies...
Studies of heavy ion collisions shed light on dense QCD systems and non-perturbative effects such as gluon saturation in nuclei, deconfinement, and hadronization mechanism in the medium. The LHCb collaboration has been developing a full heavy ion program studying dense QCD medium that utilizes both fixed-target and beam-beam collisions. Thanks to the forward instrumentation of the LHCb...
The talk will discuss recent measurements, in particular highlights about small and large collision systems, in terms of collectivity, direct photons, jets, strangeness and heavy flavor.
Relativistic Heavy Ion Collider (RHIC) is a versatile machine for studying the properties of matter created in high-energy nuclear reactions. RHIC provides collisions of various ion beam species over a wide range of energy. Therefore, it facilitates the investigation of properties of the system with quark and gluon degrees of freedom (the Quark-Gluon Plasma, QGP) and phase transition from the...
Similarities between pp and A-A collisions in terms of collective type phenomena and geometrical scaling were already evidenced at the LHC energies. New systematic studies of the strangeness production dependence on the particle density per unit of rapidity and unit of transverse overlap area and comparison between pp and AA collisions will be presented.
The transverse momentum distributions of identified hadrons contain information about the collective expansion and the freeze-out properties of the nuclear matter created in high-energy heavy-ion collisions. Due to different hadronic interaction cross-sections, it is assumed that different particle species freeze-out from the fireball at different times when the system has different...
The formation of light (anti)nuclei in heavy-ion collisions as well as in hadron collisions has been studied experimentally and theoretically for many decades. Two competing (anti)nucleosynthesis models are typically used to describe light (anti)nuclei yields and their ratios to other hadrons in heavy-ion collisions: the statistical hadronization model (SHM) and the nucleon coalescence model....
The phenomenon of strangeness enhancement, originally proposed as a signature of quark-gluon plasma formation, has received considerable new interest following recent observations in small collision systems. LHCb is uniquely well suited to study such effects in the heavy quark sector, down to very low transverse momentum. Here we will present new LHCb results on the production rates of...
Space: the final frontier for antinuclei physics. There, antinucleisynthesis models already tested on the bench of hadronic colliders and particle physics experiments are put to work to crack one of the biggest problems of modern physics: the existence and nature of dark matter.
In fact, the observation of an antinucleus in cosmic rays would most probably mean a breakthrough in searches for...
Charmonia, bound states of charm quark-antiquark pairs, represent an important tool to study creation and evolution of a medium produced in collisions of ultra-relativistic heavy ions, the quark-gluon plasma (QGP).
Production of the charm quark-antiquark pair takes place in the early stages of the collision while the subsequent hadronization into a bound state happens on a much larger time...
The ALICE collaboration pursues several upgrades to further extend the reach of heavy-ion physics at the LHC. For LHC Run 4 (2029-2032), ALICE is pioneering the use of bent, wafer-scale pixel sensors to produce truly cylindrical tracking layers with very low material budget to replace the three innermost layers of the inner tracking system. The resulting improvement in pointing resolution will...
Heavy quarks are effective probes to investigate the quark--gluon plasma (QGP) produced in heavy-ion collisions since they are primarily produced in hard-scattering processes before the formation of the QGP.
Therefore, measurements of heavy-flavour hadron production in nucleus--nucleus collisions are crucial to investigate the mechanisms of interaction of heavy quarks inside the QGP and test...
Transverse momentum spectra of strange hadrons produced in relativistic nuclear collisions at RHIC-BES energies are studied using Tsallis distribution as a parametrization. In the present work, the energy dependence and collision centrality of the Tsallis fit parameters, Tsallis temperature, volume and non-extensivity parameter, a parameter characterizing the degree of non-equilibrium for the...
