Possible anomalous New Physics contributions to dipole and weak dipole moments of the tau lepton bring renewed interest in development and revisiting charge-parity violating signatures in the tau-pair production in Z-boson decay at energies of the Large Hadron Collider.
Effects of anomalous contributions on polarization and spin correlations of the tau leptons, in the production process q...
In this report we present the macroscopic model for neutron stars (NSs) described as a perfect cold liquid
drop at equilibrium within the Tolman-Oppenheimer-Volkoff theory modified by the Kerr and Hartle
approaches for slow azimuthal angular frequency around the symmetry axis. We take into account the NS
surface deformation within the leptodermic approximation [1]. Introducing the...
Based on numerical simulations of 6 GeV electron propagation through bent crystals with various orientations relative to the incident particle direction, as well as different bending radii and crystal thicknesses, we performed a comparative analysis of the deflection efficiency in planar and axial crystal orientations. To identify the optimal bent crystal parameters for maximum electron...
The Higgs boson discovery raised new questions about the Standard Model's mysteries, particularly the existence of three matter generations with vastly different masses. New physics might be revealed through electron-positron collider experiments at specific energy levels, as the Standard Model serves as a foundation for examining nature across all scales .
An extended scalar sector enables a...
One of the main goals of relativistic heavy-ion experiments in the GeV range is to explore the QCD phase diagram, particularly at high baryon chemical potential, where critical features may emerge. At very high energies, such as at the LHC, the matter created is extremely hot with low net baryon density, and lattice QCD indicates a smooth crossover from quark–gluon plasma to hadronic matter....
The Rating Quality for Theoretical Description of Experimental Data
S. O. Omelchenko, V. M. Pugatch
Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
$1.$ $Introduction.$ A new multi-parameter score-rating methodology for assessing the quality of theoretical description of experimental data in heavy-ion physics [1-11] is proposed. The...
The production of gauge fields during inflation has a wide range of phenomenological implications. It can affect the background dynamics of inflation, modify the spectral properties of primordial scalar and tensor perturbations, and lead to the creation of charged particles through the Schwinger effect. The latter can significantly suppress the efficiency of gauge-field production during...
The international laboratories CBM and PANDA (GSI/FAIO,
Darmstadt) plan to begin physical research at the new accelerator complex in 2028.
A joint decision was made to join efforts to prepare experimental setups.
The report presents a proposal for upgrading the tracking systems
of these setups using the latest monolithic micropixel detectors (MAPS).
The integral cross sections and the transverse momentum distributions for the Z/γ* boson and light jet production in proton-proton collisions are calculated at energy 13 TeV. The hard processes with n = 0,1,2, and 3 outgoing partons are generated by MadGraph5_aMC@NLO at next-to-leading order of perturbative QCD. The parton events are re-weighted to determine uncertainties of the observables...
The Radiation Monitoring System for Run3 (RMS-R3), designed and manufactured at the Institute for Nuclear Research of the National Academy of Sciences of Ukraine, has been operating as part of the LHCb detector at CERN since late 2021 [1,2]. The system is based on metal foil detectors utilizing secondary electron emission [3]. It provides independent online luminosity monitoring critical for...
LIVE Electronic Painting is expected to be for imaging of various beauties of Nature evolving in time. As an approach to that action one can use lasers with tunable frequency as electronic sources of wide range colors, varying in real time. The created paintings will be imaged by means of sophisticated electronic devices (Timepix display, for instance).
A compact radiation-hard monitoring module based on metal foil detectors (MFDs) is being developed for the CBM experiment at FAIR/GSI (SIS-100) in fixed-target mode (Au+Au, 2–11 GeV/n). The baseline detector is a 5-mm-thick module built as a 54-mm square copper frame housing a 50 × 50 mm² foil sensor with two 1-mm-spaced HV electrodes and 50-μm foils mechanically fixed by 125-μm plastic...
Laser wakefield acceleration (LWFA) is considered as modern and effective method [1, 2] of achieving TV/m acceleration field amplitudes [3] for electron bunches acceleration. An increasing in acceleration efficiency has been achieved when plasma channels used, especially demonstrated by the generation of GeV-scale electron beams within centimeter-length capillaries [4]. While various...
The aim of the lecture is to present the current state of use of Timepix3 pixel detectors in the ATLAS and MoEDAL experiments at the LHC at CERN, specifically within the ATLAS-TPX3 and MoEDAL-TPX3 detector networks, which were designed, installed and operated by the teams of the IIEAP CTU in Prague. Their ability to visualize individual particle tracks/trajectories in the semiconductor...
The LHCb detector is a forward spectrometer covering the pseudorapidity range 2< η <5. It is equipped with a high-precision tracking system, which includes a silicon microstrip vertex detector (VELO) located around the interaction point (IP8), large-area silicon microstrip detectors upstream of the dipole magnet, and three silicon microstrip stations downstream of the magnet. The track...
In this report, we present a method for the reconstruction of neutral long-lived kaons ($K_L^0$) using Monte Carlo simulations of the Belle II detector at the SuperKEKB accelerator in Tsukuba, Japan. The detector’s nearly $4\pi$ hermetic coverage, layered subdetector structure, and the precisely known initial kinematics of the $e^-\,e^+$ collisions provide a unique environment for the study of...
We consider a fast charged particle scattering on parallel atomic planes in the eikonal approximation of quantum electrodynamics. The eikonal approximation was chosen because it both accounts for quantum nature of the incident particle and has a wider region of applicability compared to the frequently used Born approximation. Based on Glauber's approach, we continued our previous works and...
This presentation introduces an energy resolution study in GRAiNITA, a novel sampling calorimeter technology designed to address the high-resolution and cost-efficiency requirements of future collider experiments. The detector design features millimeter-sized $ZnWO_4$ scintillation grains distributed within a heavy liquid medium of sodium polytungstate. Scintillation light is captured by...
