The Neutron Skin (NS), which is a phenomenon of an increased neutron to proton density ratio in the periphery of neutron-rich nuclei, is a prominent probe of the nuclear equation of state, connecting nuclear physics and astrophysics. However, the theoretical predictions and experimental measurements of the NS in $^{208}$Pb have been contradictory. The PREX-II experiment resulted in a much...
The ALICE Inner Tracking System (ITS2) will be upgraded for LHC Run 4. The upgrade project foresees the replacement of the three innermost layers of the ITS2 with a truly cylindrical vertex detector, the ITS3. This innovative tracker will be composed of three self-supporting layers, each comprising two large-area (O(10×26 cm2)), ultra-thin (20 – 40 µm) and flexible stitched Monolithic Active...
ATOMKI Collaboration (Debrecen) observed anomalies in the angular distribution of e+e− pairs emitted via Internal pair Conversion (IPC) during nuclear de-excitation of the 8Be, 4He, and 12C. This enhancements seem to be compatible with the production, and successive decay, of a new vector boson with a mass of ∼ 17 MeV. PADME Collaboration performed an invariant mass scan in the sensible region...
In students' conference I want to introduce the discussion on the HEP's yet unsolved problem of possible CPT violation and baryon asymmetry of the universe (BAU), on which I was trying to work with Associate Prof. Merab Gogberashvili for my Bachelor's degree. After Anderson's discovery of the positron, the problem was obvious: for some unknown reasons the observable universe is matter...
The method of moments has been employed to derive relativistic fluid-dynamical theories from the Boltzmann equation for the past decades [1]. This approach consists in expanding the single-particle distribution function using a basis of irreducible momenta, where the expansion coefficients are the irreducible moments of the nonequilibrium distribution function [2]. Unlike the Chapman-Enskog...
The nucleon–nucleon interaction may lead to the creation of clusters, mainly α-particles, inside the nuclear medium. The investigation of nuclear clustering has been a long-standing area of study and different experiments have been conducted with a variety of α-conjugated nuclei, mainly at the Coulomb barrier and Fermi energy range (1-100 MeV). The FOOT experiment aims to investigate the...
A compilation of the experimental p+p data of neutral and charged kaon production has revealed a discrepancy between the observed K0 s yield and the the average number of produced charged kaons K0 s = (K+ +K−)/2. This widespread relation holds only for a colliding system that is an uniform population w.r. to the isospin (i.e. that consists of an equal number of all members of a given isospin...
R&D efforts are ongoing to develop a cylindrical Micromegas tracker for the central barrel of the ePIC detector, the first experiment at the future Electron Ion Collider (EIC). The Micromegas detectors will be a part of a multi-technology tracker that needs to fit inside a 1.7 T solenoid, bringing stringent constraints on space, material budget and number of electronic channels. As such, a...
The Belle-II experiment with its e+e− collisions allow observations of exotic states, complementa- ry to those in heavy-ion collisions as for example at LHCb. The Belle-II detector is commissioned at the SuperKEKB B-Factory in Japan and provides vital conditions for the study of such states. A bound state with six quarks and uuddss-content has strangeness quantum-number (−2) and would be the...
Using data collected in pp collisions at √s = 13 TeV with the ALICE detector during the Run 2 period of the LHC, the femtoscopy technique has been successfully employed to extend the boundaries of known hadron-hadron interactions into the S = -3 sector and to initiate studies of charmed and three-body systems. The key element of these analyzes is the assumption of a common particle emitting...
Elastically scattered electrons polarised perpendicular to the scattering plane will exhibit a count rate asymmetry (A$_{n}$) amongst left and right, which can be used as a probe for multi photon exchange contributions to the scattering amplitude. While for most target nuclei A$_{n}$ is in good agreement with the theoretical predictions, previuos measurements on $^{208}$Pb obtained values...
Linear stability of Israel-Stewart theory in the presence of net-charge diffusion was investigated in [C. V. Brito and G. S. Denicol, Linear stability of Israel-Stewart theory in the presence of net-charge diffusion, Phys. Rev. D 102, 116009 (2020)] for the case of a massless, classical gas of noninteracting particles. However, in that work only a vanishing net-charge background was...
