The underlying event (UE) has been studied in ALICE for pp collisions at $\sqrt{s}$ =5.02 TeV. The average number density and the average total transverse momentum ($p_{\rm T}$) are studied in the near, away and transverse regions as a function of the leading particle $p_{\rm T}$. Results at 5.02 TeV show qualitatively the same behavior as observed at different energies.
For the first time...
Deep Learning methods are a popular tool for efficient and fast data analysis in high energy/ nuclear physics experiments. The upcoming Compressed Baryonic Matter (CBM) experiment will study nuclear-nuclear collisions in the range of 10- 40 AGeV at an unprecedented event rate of up to 10MHz, creating about 1TB/s of raw data. In order to run the experiment to its full potential, novel methods...
Anisotropic flow of produced hadrons, in particular of multi-strange hyperons, is an important observable for understanding the dynamics and properties of the QCD matter created in heavy-ion collisions at high net baryon densities. The performance of the Compressed Baryonic Matter (CBM) experiment at FAIR is presented for anisotropic flow measurement relative to the projectile spectator plane...
The Compressed Baryonic Matter experiment (CBM) at FAIR aims to investigate the high net baryon density and moderate temperature region of the QCD phase diagram, using collisions of heavy ions at center-of-mass energies of a few GeV per nucleon. Anisotropic transverse flow is among the key observables to study the properties of matter created in such collisions. The CBM performance for charged...
The precise measurement of the neutral meson production in pp collisions can be used to constrain fragmentation functions and parton density functions needed by pQCD calculations. Additionally, those measurements serve as input for direct photon analyses. Moreover, the dependence of the neutral meson cross section on the event charged-particle multiplicity could give further insight into...
The Relativistic Heavy-Ion Collider aims to study the deconfined state of quarks and gluons known as Quark-Gluon Plasma and its transition from hadronic matter. $\phi$($s\bar s$) meson has a small hadronic cross-section implying lesser final state interactions in the medium. Thus, the elliptic flow ($v_{2}$) of $\phi$ mesons is sensitive to the properties of the medium in the initial stages of...
The transverse region of di-hadron correlations is known to be
very sensitive to the underlying event (UE), and initial- and
final-state radiation (ISR and FSR). In pp collisions, particle
production in the transverse azimuthal region, with respect to
the leading particle, reaches a plateau for $p^{leading}_{T}>$ 5
GeV/c. In this contribution, a study of the multiplicity...
The Compressed Baryonic Matter experiment (CBM) aims to study the area of the
QCD phase diagram at high net baryon densities and moderate temperatures. It is predicted by Three-fluid Hydrodynamics-based Event Simulator (THESEUS) that one of the signatures of phase transition is a change in shape of the mid-rapidity curvature and yield.
In this contribution we will present CBM performance for...
The PHENIX experiment measured two-particle Bose- Einstein quantum-statistical correlations of charged kaons in Au+Au collisions $\sqrt{s_{NN}}=200$ GeV collision. The correlation functions are parametrized assuming that the source emitting the particles has a Lévy-shaped characterized by the $\alpha$ Lévy exponent and the $R$ Lévy scale. By introducing the $\lambda$ intercept parameter we...
Hadronic resonances are interesting probes of the hot and dense matter created in the heavy-ion collision. Due to their short lifetimes, resonances are useful tools to understand the mechanism of particle production and properties of the hadronic phase created after the collision. The yield of resonances might be modified with respect to expectations due to effects such as rescattering and...
In relativistic heavy ion collisions, the event-by-event mean transverse momentum ($\langle{p_{T}}\rangle$) fluctuations are sensitive to fluctuations in overlap area and reflect the nature of initial-state fluctuations in energy density. We present a cumulant framework to measure the event-by-event $\langle{p_{T}}\rangle$ fluctuations up-to $4^{\mathrm{th}}$ order which is then validated...
The STAR collaboration has recently released measurements of soft particle production in Ru+Ru and Zr+Zr collisions [1]. Due to the isobar running mode and the huge statistics of collected events, such measurements are essentially devoid of experimental error, and permit us to perform precision tests of hydrodynamic models of the quark-gluon plasma (QGP).
In this contribution, we discuss...
Recent measurements in high multiplicity proton-proton collisions have shown the emergence of several features that are reminiscent of QGP phenomenology, one of which is the enhanced production of strange and multi-strange hadrons. Strange hadron production represents a key probe to study QGP formation in hadronic collisions as well as to understand the mechanisms behind hadronisation.
In...
