A. Makhnev
A5087528440- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Dark Matter and Cosmic Phenomena
- Nuclear physics research studies
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Nuclear reactor physics and engineering
- Stochastic processes and statistical mechanics
- Statistical Mechanics and Entropy
- Radioactive Decay and Measurement Techniques
- Quantum, superfluid, helium dynamics
European Organization for Nuclear Research
2023-2025
Institute for Nuclear Research
2020-2024
Moscow Institute of Physics and Technology
2020-2023
University of Silesia in Katowice
2022
Institute of Physics
2022
Łukasiewicz Research Network
2022
Strong interactions preserve an approximate isospin symmetry between up (u) and down (d) quarks, part of the more general flavor symmetry. In case K meson production, if this were exact, it would result in equal numbers charged (K+ K−) neutral (K0 $${\overline{K}}^{0}$$ ) mesons produced collisions isospin-symmetric atomic nuclei. Here, we report results on relative abundance over production argon scandium nuclei at a center-of-mass energy 11.9 GeV per nucleon pair. We find that K+ K−...
Abstract The NA61/SHINE experiment at the CERN Super Proton Synchrotron studies onset of deconfinement in strongly interacting matter through a beam energy scan particle production collisions nuclei varied sizes. This paper presents results on inclusive double-differential spectra, transverse momentum and rapidity distributions mean multiplicities $$\pi ^\pm $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>±</mml:mo> </mml:msup> </mml:math> ,...
Abstract This paper reports measurements of two-pion femtoscopic correlations in Be+Be collisions at a beam momentum 150 $$A\,\hbox {GeV}\!/\!c$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>A</mml:mi> <mml:mspace /> <mml:mtext>GeV</mml:mtext> <mml:mo>/</mml:mo> <mml:mi>c</mml:mi> </mml:mrow> </mml:math> (energy available the center-of-mass system for nucleon pair $$\sqrt{s_{\text {NN}}} = 16.84$$ <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi>...
A good knowledge of nuclear fragmentation cross sections is important to interpret the fluxes secondary cosmic rays from Galaxy. Here we report new measurements with NA61/SHINE experiment at CERN SPS. The specific focus on for production boron in Galaxy interactions <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mmultiscripts><a:mi mathvariant="normal">C</a:mi><a:mprescripts/><a:none/><a:mn>12</a:mn></a:mmultiscripts></a:math> nuclei hydrogen interstellar medium, including...
We present a measurement of the momentum spectra ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, ${\mathrm{K}}^{\ifmmode\pm\else\textpm\fi{}}$, ${\mathrm{p}}^{\ifmmode\pm\else\textpm\fi{}}$, $\mathrm{\ensuremath{\Lambda}}$, $\overline{\mathrm{\ensuremath{\Lambda}}}$, and ${\mathrm{K}}_{\mathrm{S}}^{0}$ produced in interactions negatively charged pions with carbon nuclei at beam momenta 158 $350\text{ }\text{ }\mathrm{GeV}/c$. The total production cross sections are measured as well....
Abstract The critical point of strongly interacting matter is searched for at the CERN SPS by NA61/SHINE experiment in central $$^{40}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>40</mml:mn> </mml:mmultiscripts> </mml:math> Ar + $$^{45}$$ <mml:mn>45</mml:mn> Sc collisions 13 A , 19 30 40 and 75 GeV/ c . dependence second-order scaled factorial moments proton multiplicity distributions on number subdivisions transverse momentum space...
This paper presents multiplicity measurements of ${K}_{\mathrm{S}}^{0}$, $\mathrm{\ensuremath{\Lambda}}$, and $\overline{\mathrm{\ensuremath{\Lambda}}}$ produced in $120\text{ }\text{ }\mathrm{GeV}/c$ proton-carbon interactions. The were made using data collected at the NA61/SHINE experiment during two different periods. Decays these neutral hadrons impact measured ${\ensuremath{\pi}}^{+}$, ${\ensuremath{\pi}}^{\ensuremath{-}}$, $p$ $\overline{p}$ multiplicities reaction, which are crucial...
The HGND (High Granular Neutron Detector) is developed for the BM@N (Baryonic Matter at Nuclotron) experiment on extracted beam of Nuclotron JINR, Dubna. will be used to measure azimuthal flow neutrons produced with energies ranging from 300 4000 MeV in heavy-ion collisions 2--4 AGeV. charged particles measured using magnet spectrometer. data shed light study high-density Equation State (EoS) isospin-symmetric nuclear matter, which crucial studying astrophysical phenomena such as neutron...
The critical point of dense, strongly interacting matter is searched for at the CERN SPS in ${}^{40}$Ar + ${}^{45}$Sc collisions 150A GeV/c. dependence second-order scaled factorial moments proton multiplicity distribution on number subdivisions transverse momentum space measured. intermittency analysis performed using both and cumulative momentum. For first time, statistically independent data sets are used each subdivision number. obtained results do not indicate any significant pattern....
Measurements of $K^{*}(892)^0$ resonance production via its $K^{+}\pi^{-}$ decay mode in inelastic $p+p$ collisions at beam momenta 40 and 80 GeV/$c$ ($\sqrt{s_{NN}}=8.8$ 12.3 GeV) are presented. The data were recorded by the NA61/SHINE hadron spectrometer CERN Super Proton Synchrotron. \textit{template} method was used to extract signal. Transverse momentum rapidity spectra obtained. mean multiplicities mesons found be $(35.1 \pm 1.3 \mathrm{(stat)} 3.6 \mathrm{(sys)) \cdot 10^{-3}}$ $(58.3...
This paper reports measurements of two-pion Bose-Einstein (HBT) correlations in Be+Be collisions at a beam momentum 150$A\,\mbox{GeV}/\textit{c}$ by the $\mbox{NA61/SHINE}$ experiment CERN SPS accelerator. The obtained space correlation functions can be well described L\'evy distributed source model. transverse mass dependence parameters is presented, and their possible theoretical interpretations are discussed. results show that exponent $\alpha$ approximately constant as function...
First physics results of the BM@N experiment at Nuclotron/NICA complex are presented on {\pi}+ and K+ meson production in interactions an argon beam with fixed targets C, Al, Cu, Sn Pb 3.2 AGeV. Transverse momentum distributions, rapidity spectra multiplicities $\pi^+$ $K^+$ mesons measured. The compared predictions theoretical models other measurements lower energies.
This paper presents multiplicity measurements of charged hadrons produced in 120 GeV/c proton-carbon interactions. The were made using data collected at the NA61/SHINE experiment during two different data-taking periods, with increased phase space coverage second configuration due to addition new subdetectors. Particle identification via dE/dx was employed obtain double-differential production multiplicities π+, π−, p, p¯, K+, and K−. These are presented as a function laboratory momentum...
To study the dependence of equation state high density nuclear matter on term characterizing isospin (proton-neutron) asymmetry matter, it is necessary to measure azimuthal flow neutrons as well charged particles from a dense in nuclear-nuclear collisions. For this purpose INR RAS developing new high-granular neutron detector which will be used BM@N experiment at extracted beam Nuclotron accelerator JINR (Dubna). This identify and their energies heavy-ion collisions up 4 GeV per nucleon....
Abstract The critical point of dense, strongly interacting matter is searched for at the CERN SPS in 40 Ar + 45 Sc collisions 150 A Ge V / c . dependence second-order scaled factorial moments proton multiplicity distribution on number subdivisions transverse momentum space measured. intermittency analysis performed using both and cumulative momentum. For first time, statistically independent data sets are used each subdivision number. obtained results do not indicate any significant pattern....
The critical point of strongly interacting matter is searched for at the CERN SPS by NA61/SHINE experiment in central $^{40}$Ar +$^{45}$Sc collisions 13$A$, 19$A$, 30$A$, 40$A$, and 75$A$ GeV/$c$. dependence second-order scaled factorial moments proton multiplicity distributions on number subdivisions transverse momentum space measured. intermittency analysis uses statistically independent data sets every subdivision cumulative-transverse variables. results obtained do not indicate...
Abstract The yields of $$K^0_S$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math> mesons have been measured in inelastic p+p interactions at incident projectile momenta 31, 40 and 80 $$\text {Ge}\hspace{-1.00006pt}\text {V}\!/\!c$$ <mml:mrow> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> <mml:mo>/</mml:mo> <mml:mi>c</mml:mi> </mml:mrow> ( $$\sqrt{s_{NN}}=7.7, 8.8$$...