Conveners
PA-Light-flavor and Strangeness
- Parada Hutauruk
PA-Light-flavor and Strangeness
- Jamie Karthein (MIT)
PA-Light-flavor and Strangeness
- Seung-il Nam
PA-Light-flavor and Strangeness
- Lukáš Chlad
Hydrodynamic expansion and jet quenching are responsible for the production of low and high transverse-momentum (𝑝𝑇) particle in heavy-ion collisions, respectively. However, it is still a challenge to simultaneously describe hadron nuclear modification factor $𝑅_{\rm 𝐴𝐴}$ and elliptic flow $𝑣_2$, especially in the intermediate $𝑝_𝑇$ region of 2$<𝑝_𝑇<10$ GeV/c. In this talk, we combine...
Femtoscopic correlations of identified and unidentified hadrons are measured with data recorded by the CMS experiment at the LHC over a broad multiplicity range and pair transverse momentum. The first femtoscopy measurements carried in CMS for all pair combinations of $\mathrm{K}^{0}_{\mathrm{S}}$, $\Lambda$ and $\overline{\Lambda}$ are reported. These identified particles are employed to...
We investigate extensions of the Hadron Resonance Gas (HRG) Model beyond the ideal case by incorporating both attractive and repulsive interactions into the model [1]. When considering additional states exceeding those measured with high confidence by the Particle Data Group, attractive corrections to the overall pressure in the HRG model are imposed. On the other hand, we also apply...
High-multiplicity proton-proton collisions at LHC show the onset of phenomena typical of heavy-ion collisions, such as collective effects, suppression of short-lived resonances, and strangeness enhancement. These effects, whose origin is still under debate, suggest a complex particle production mechanism whose relative contributions evolve smoothly going from low to high multiplicity...
The production mechanism of light (anti)nuclei in heavy-ion collisions has been extensively 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...
The ratio of strange to non-strange hadron yields increases from low-multiplicity to high-multiplicity hadronic interactions, reaching values observed in heavy-ion collisions. The ALICE experiment investigates the microscopic origin of this striking phenomenon by performing dedicated multi-differential analyses in pp collisions at $\sqrt{s}$ = 13 TeV.
To separate strange hadrons produced in...
We will present model studies of dynamics of baryon number transport, strangeness conservation and their manifestation in $\Omega$-hadron correlations. Although strange quarks are produced in $s\bar{s}$ pairs, the ratio of $\Omega^{-}$ to ${\bar{\Omega}}^{+}$ is greater than one in heavy-ion collisions at RHIC. Thus the produced $\Omega$ hyperons must carry net baryon quantum numbers from the...
We present a unique signal of jet-induced medium excitations: the enhancement of baryon-to-meson ratios around the quenched jets. To illustrate this, we study jet-particle correlations and the distributions of jet-induced identified particles with respect to the jet direction in Pb+Pb collisions at the LHC via a multi-phase transport model. We find a strong enhancement of baryon-to-meson...
Quantum Chromodynamics (QCD) predicts the existence of a deconfined state of matter called Quark-Gluon Plasma (QGP) at sufficiently high-temperature and/or high-energy density. In order to investigate the phase diagram of QCD matter, the first phase of the Beam Energy Scan (BES-I) program started at the Relativistic Heavy Ion Collider (RHIC) in the year 2010. In continuation of BES-I, a high...
Strangeness production has been suggested as a sensitive probe to the early-time dynamics of the nuclear matter created in heavy-ion collisions. Transverse momentum distributions and yields of strange hadrons provide important information about the particle production mechanisms and help us to understand the properties of the created medium and its evolution in these collisions.
Thanks...
We study the $\phi$ meson production in heavy-ion collisions from
subthreshold energies of 1.23 A GeV up to RHIC energies within the
microscopic Parton-Hadron-String Dynamics (PHSD) transport approach where
the novel production channels of $\phi$ meson based on the coupled channel
$T$-matrix approach are implemented along with the collisional broadening
of $\phi$-meson spectral width in...
Hadronization models are successfully describing the particle yields, particularly in high-energy nucleus-nucleus collisions [1]. They are also used to describe elementary processes, like pp interactions. Extensive measurements at $\sqrt{s}$= 17.3 GeV by NA49 and NA61/SHINE collaborations provided yields of numerous particles, including double-strange hyperons.
Reasonable description of all...
The $\overline{\rm K}$p system is characterised by the presence of several coupled channels, systems like $\overline{\rm K}^0$n and $\pi\Sigma$ with a similar mass and the same quantum numbers as the K$^{-}$p state. The strengths of these couplings to the K$^-$p system are of crucial importance for the understanding of the nature of the
$\Lambda$(1405) and of the attractive K$^-$p strong...
NA61/SHINE is a multipurpose fixed-target facility at the CERN Super Proton Synchrotron. The main goals of the NA61/SHINE strong interactions program are to discover the critical point of strongly interacting matter and study properties of the onset of deconfinement. To reach these goals, hadron production measurements are performed in the form of a two-dimensional scan by varying collision...
Heavy-ion collisions in the few GeV energy regimes probe similar temperatures and densities as created in neutron star mergers and provide a tool to probe cosmic matter in earthly laboratories [1]
In March 2019, the HADES collaboration recorded $13.7 \cdot 10^{9}$ Ag(1.58$A$~GeV)+Ag events as part of the FAIR Phase-0 program. Within this talk, we present preliminary results for yields and...
With a unique geometry covering the forward rapidity region, the LHCb detector provides unprecedented kinematic coverage at low Bjorken-$x$ down to $x \sim 10^{-5}$ or lower. The excellent momentum resolution, vertex reconstruction and particle identification allow precision measurements down to very low hadron transverse momentum. In this contribution we present the latest studies of the...
