Over the last five decades, many outstanding questions in particle physics have been answered, leading to the Standard Model (SM) and its spectacular confirmation with the discovery of the Higgs boson in 2012, which would supply the heart to this theory. Now the hunt is on for a deeper theory of reality. To answer this question, Europe, Japan, the US and China have proposed plans for building...
Celebrating the 70th Anniversary of the CERN KINR Team enjoys the “PAST, PRESENT and FUTURE” horizons of its eclusive data, p scientific life participating at CERN, taking and analyzing construction and upgrade activities of the experimental setups with a clear roadmap to the end of this century!
In this report, we present KINR activity at CERN with emphasis on LHCb Collaboration.
LHCb...
Anomalous contributions to magnetic and electric dipole moments of the tau lepton have brought renewed interest in development of new CP violating signatures in tau-pair production at Belle II and the LHC. We discuss spin-correlation formalism for production of polarized tau leptons in electron-positron and photon-photon processes, and in proton-proton collisions. Such studies can give...
Production of muon pairs in junction with hadronic jets is studied under conditions of LHC experiments [1-3]. Hard parton processes are simulated with MadGraph5_aMC@NLO [4,5] at the tree level and at Next-to-Leading order (NLO) in perturbative quantum chromodynamics (pQCD). The parton processes have n=0,…,4 light quarks or gluons in the final states. The generated parton events are showered...
One of the objectives of current and future collider experiments in the GeV range, such as the Beam Energy Scan program at the Relativistic Heavy Ion Collider (RHIC BES) and the Compressed Baryonic Matter experiment at the Facility for Antiproton and Ion Research (FAIR CBM), is to study the phase diagram of Quantum Chromodynamics. These experiments aim to detect signals of a phase transition...
Rare decays are widely recognized as an excellent laboratory for testing the Standard Model at high precision and searching for the New Physics phenomena [1]. The flavor-changing neutral currents, like b→s l^+ l^- transitions, are of special interest. They are forbidden at the tree level in the Standard Model and, therefore, can only proceed via higher-order diagrams. If experimental deviation...
The GRAiNITA is a novel type of electromagnetic calorimeter with a detection volume filled with high atomic number scintillator grains of about millimetre in size, interfiled with high-density liquid and wavelength shifting (WLS) optical fibres. The calorimeter is being developed to meet the requirements of future collider experiments.
The energy resolution (R = $\frac{σ_E}{E}$) of the...
Unconventional baryonic and mesonic states represent a topical issue in contemporary hadron physics. New results from the charm-quark sector indicate the existence of multi-quark objects beyond the quark-antiquark and 3-quark configurations (mesons and baryons) known from particle physics textbooks, which reveal themselves through unexpectedly narrow structures in energy. They are interpreted...
Production of strange mesons (KS) and baryons (Λ) have been studied with the LHCb in p-Pb collisions at √s = 5 TeV. Cross sections as well as their ratios (Λ-bar/KS, Λ-bar/Λ) have been measured differentially in transverse momentum between 0.15 and 7.0 GeV/c and rapidity in the ranges 1.5 < y < 4.0 and −5 < y < −2.5. The nuclear modification factors are measured for given transverse momentum...
Within the framework of the mean field model, the thermodynamics of the relativistic scalar system of interacting particles and antiparticles in the presence of a Bose-Einstein condensate is investigated. It is assumed that the total isospin (charge) density is conserved. It is shown that the particle-antiparticle boson system reveals four types of phase transitions into the condensate phase....
This study investigates the effectiveness of tungsten matrix collimators for spatially fractionated radiation therapy (SFRT). The research combines experimental studies and Monte Carlo simulations to evaluate the fractionation of gamma-ray and electron beams. The results demonstrate the possibility of achieving high fractionation indicators (PVDR over 10) for irradiation of shallow...
The proposed design and expected functional characteristics of the monitoring system for the future CBM experiment (GSI/FAIR) [1] are presented. This MS-CBM-R1 system will be created at the Institute of Nuclear Research of the National Academy of Sciences of Ukraine based on the physical and technical principles of metal foil detectors (MFD). The main tasks of the system are to monitor the...
One of the important problems of accelerator physics is the problem of deflecting the direction of motion of high-energy charged particles. One of the options for solving this problem is to use thin bent crystals, passing through which the particles change their direction of motion. This occurs when the particles enter the crystal at a small angle to one of the main crystallographic axes or...
In this report, we present KINR proposal to “European Strategy for Particle Physics” (ESPP. 3d Update). https://europeanstrategy.cern/ The preliminary version was submitted after discussion held on-line on the 28th October 2024 Meeting of the Ukrainian Researchers“ devoted to Contribution to the European Strategy for Particle Physics”.
The modernized LHCb detector [1] provides a data set for luminosities in proton-proton collisions up to 2 × 1033 cm-2s-1 and at energies up to 13.6 TeV. Monitoring of the luminosity, beam and background control is necessary to ensure the safe operation of the experiment. To meet these needs, the Institute for Nuclear Research of the National Academy of Sciences of Ukraine created the RMS-R3...
This work aims to investigate the simultaneous influence of two-photon effects in quantum electrodynamics and logarithmic corrections in quantum chromodynamics on certain observable experimental quantities (structure functions A(Q2) and B(Q2) in elastic electron-deuteron scattering). Analyzing these effects broadens our understanding of electron scattering physics, particularly the...
In the framework of physics beyond the Standard Model, an experiment is presented to search for a chiral graviton mode. These particles were found in a special type of liquid that behaves in a special way under the influence of a magnetic field. Studying the properties of graviton modes will provide an opportunity to understand quantum gravity.
To study gravitational modes, inelastic...
1) It is proposed the application to critical phenomena of the previously proposed [1] hypothesis of the phase transition-decomposition of the maternal universe, described by the semisimple Clifford algebra (CА) Cl(1,9) [2], to direct sum of CА Cl(1,3) (which corresponds to our Universe) and "universes-algebras" Cl(0,4), Cl(0,6), which have degenerate time degree of freedom into space one....
At the moment, one of the urgent problems of high-energy physics is research in the field of creating an Advanced Linear International Collider (ALIC). This collider is based on the methods of advanced and novel accelerator (ANA), among which one of the most efficient is laser wakefield acceleration.The aim of this study was to investigate the dynamics and parameters of self-injected bunches...
Timepix3 is a universal integrated circuit suitable for reading out semiconductor and gas-filled detectors. Timepix3 can be used in a wide range of applications, from X-ray imaging to particle trajectory reconstruction. Depending on the application requirements, the user can choose one of three data acquisition modes available in Timepix3. In data transfer mode, information about the arrival...
High-efficiency acceleration of charged particle beams in the plasma wakefield accelerator was studied experimentally and by numerical simulation (see [1]-[9]). The most impressive experimental results [1] until now in electron accelerating by a wakefield, excited in a plasma, have been achieved using capillary-generated plasma. Plasma-wakefield acceleration provides high accelerating...
