Conveners
Strangeness and Light Flavour
- Roman Lietava (University of Birmingham (GB))
Strangeness and Light Flavour
- Christian Kuhn (Institut Pluridisciplinaire Hubert Curien (FR))
Strangeness and Light Flavour
- Angela Badala (Universita e INFN, Catania (IT))
Strangeness production in nucleus-nucleus collisions has been a subject of studies over 40 years. It has played a key role in a search for the quark-gluon plasma and the onset of deconfinement in the collisions. Here of particular importance are results of the NA49 and NA61/SHINE experiments at CERN SPS and the STAR BES experiment at RHIC. They have conducted measurements of hadron production...
We investigate whether the quark gluon plasma (QGP) is created in small colliding systems focusing on hadron production mechanisms.
Recently the ALICE Collaboration reported strangeness enhancement in small colliding systems. The yield ratios of (multi-)strange hadrons to charged pions in various colliding systems show the monotonic increase and scaling with multiplicity [1]. Motivated by...
Light flavor hadrons are copiously produced in hadronic and heavy-ion interactions and bring a wealth of information about properties of the produced medium and reaction dynamics. Having different masses, quark content and lifetimes, light flavour hadrons do not only serve as general observables in the soft sector, but also play an important role as high transverse momentum probes and...
The ALICE experiment is dedicated to the study of strongly interacting matter at the extremely high temperatures and energy densities reached at the LHC. Its excellent tracking and particle-identification capabilities allow characterising the hot nuclear matter via detailed measurements of particle production in nucleus-nucleus collisions. In addition, the study of proton-nucleus collisions...
We performed state-of-the-art QCD effective kinetic theory simulations of chemically equilibrating QGP in longitudinally expanding systems. We find that chemical equilibration takes place after hydrodynamization, but well before local thermalization. By relating the transport properties of QGP and the system size we estimate that hadronic collisions with final state multiplicities dNch/dη≳10^2...
We present our results on the cross-correlators of baryon number $B$, electric charge $Q$ and strangeness $S$, obtained from lattice QCD simulations, and we compare them to the predictions of the Hadron Resonance Gas (HRG) model. We discuss possible comparisons to the available experimental results and we suggest additional measurements to bring the data closer to the theoretical calculations.
The measurement of the hyper-triton lifetime with the ALICE detector at the LHC is presented to address one of the open key question of hypernuclear physics: the hyper-triton lifetime puzzle.
The Pb-Pb dataset collected during the LHC Run 2 at $ \sqrt{s_{\rm NN}}$ = 5.02 TeV allows for a systematic study of light (anti-)hypernuclei production in heavy-ion collisions, in particular, for the...
We present the novel microscopic n-body dynamical transport approach PHQMD
(Parton-Hadron-Quantum-Molecular-Dynamics) for the description of particle production and cluster formation in heavy-ion reactions at relativistic energies. The PHQMD extends the established PHSD (Parton-Hadron-String-Dynamics) transport approach by replacing the mean field by density dependent two body interactions in...
We present the first determination of the scattering parameters of $\Lambda K$ pairs ($\Lambda K^+$, $\Lambda K^-$, and $\Lambda K^0_{\rm S}$) associated with strong final state interactions. The parameters are extracted from measured femtoscopic $\Lambda K$ correlation functions in Pb–Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV, with the widely used Lednicky and Lyuboshitz model. The...
The main goal of studying heavy-ion collisions is to understand the properties of the matter under extreme conditions. The spatial and temporal characteristics of particle emission can be extracted using femtoscpy technique. From non-identical particle correlations one can obtain information about asymmetry in emission process between those two kind of particles. Such asymmetry can provide...
The heavy-ion collisions at energies of FAIR and NICA are studied within the microscopic transport models. The whole interaction area is subdivided into the smaller cells. We perform the analysis of the space-time evolution of all particles in all cells, in the T-mu_B and T-mu_S planes, and the analysis in x-t of the finally emitted strange and non-strange particles.
Following the time...
We present the preliminary results on an anisotropic transverse flow of particles with strange content ($K^0_s$ and $K^+$) in Au+Au collisions at $\sqrt s_\mathrm{NN} = 2.42\,\mathrm{GeV}$ measured with HADES. The strange particle flow in a heavy-ion collision is a good probe for nuclear equation-of-state. Kaon flow was seldom measured at such low centre-of-mass energy region due to...
In order to understand strangeness and resonance production mechanisms, one can study the correlations of hadrons with hidden (e.g. the $\phi$ meson) and open strangeness ($K_{S}^{0}$, $\Lambda$ and $\bar{\Lambda}$) in hard (jet) processes and in soft (bulk) processes. Two-particle jet-like angular correlations with $\phi$ mesons in p-Pb collisions probe both the jet and the underlying event...
A partial restoration of the chiral symmetry is the fundamental quantum process of interaction of the hadronic matter with the quark-antiquark condensate [1]. According to QCD a particle embedded in a hot and dense hadronic matter should change its basic properties like mass and decay constant with respect to their values in vacuum. Kaons produced in heavy ion collisions around threshold for...
