Two-particle Bose-Einstein momentum correlation functions are studied for charged-hadron pairs in lead-lead collisions at a center-of-mass energy per nucleon pair of $\sqrt{s_{_{NN}}} = 5.02$ TeV. The data sample, containing $4.27\times 10^9$ minimum bias events corresponding to an integrated luminosity of 0.607 nb$^{−1}$, was collected by the CMS experiment in 2018. The experimental results...
One of the most important goals of NA61/SHINE is to investigate and
understand the phase structures of hadronic matter. The investigation of the phase-diagram can be achieved by varying the beam momentum (13A-150(8)A GeV/c) and by changing the collision system (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La, Pb+Pb). This method enables to perform a two-dimensional scan of the phase diagram of QCD....
Abstract
The applicability of statistical hadronization-based models to the high baryon density regions of the QCD phase diagram still remains unresolved. In our previous work [1], we have proposed a spherical geometry of the fireball and the corresponding expansion shape into the THERMal heavy IoN generATOR (THERMINATOR) 2 [2], a statistical hadronisation based model implementing a...
At high energy density and temperature, a phase transition of matter into a medium of deconfined quarks and gluons is predicted to form, it is called quark-gluon plasma (QGP). Such medium is of interest for the study of strongly interacting matter. Heavy flavor hadron dynamics in QGP constitutes a good probe for the study of QGP, because of their large mass they are produced at early stages of...
In quantum mechanics, interference traditionally occurs only between indistinguishable particles. In stellar intensity interferometry, this means measuring two photons of the same wavelength (color), and in high energy experiments it means femtoscopic correlation measurements must investigate pairs of identical particles ($\pi^+\pi^+$, $\pi^-\pi^-$ etc.). However, nearly a decade ago Cotler...
Most of the knowledge we have to date about Short Range Correlations (SRC) in nuclei comes from electron induced quasi-free scattering (QFS) experiments in large momentum transfer kinematics. Experiments performed at Jefferson Lab with a 12C nucleus showed that the high-momentum tail of the nuclear momentum distribution is dominated by SRC and that the neutron/proton pairs are about 20 times...
Understanding the effects of short-range nucleon-nucleon correlations (SRC), fluctuations when nucleons form pairs with high relative momentum and small center of mass momentum for short periods of time, is an important ingredient in theoretical models to understand the density dependence of symmetry energy at both sub and supra saturation densities. Characteristics and properties of SRCs...
The investigation of femtoscopic correlations between pairs of photons emitted from heavy-ion collisions offers a unique opportunity to investigate the evolving source spacetime characteristics and properties. Unlike commonly studied charged particle correlations, photons are not influenced by strong or electromagnetic interactions, and thus have a longer mean free path. These characteristics...
