Light-nuclei production in Au+Au collisions at √sNN = 3 GeV within a thermodynamical approach: Bulk properties and collective flow

M. Kozhevnikova (LHEP JINR, Dubna), Yu.B. Ivanov (Kurchatov Inst., Moscow and Dubna, JINR) We present results of simulations of light-nuclei production in Au+Au collisions at a collision energy of √sNN = 3 GeV within the updated Three-fluid Hydrodynamics-based Event Simulator Extended by UrQMD (ultrarelativistic quantum molecular dynamics) final State interactions …

Production of light hypernuclei in Au+Au collisions at √sNN=3 GeV within a thermodynamic approach

M. Kozhevnikova and Yu. B. Ivanov Simulations of the Λ-hyperon and light-hypernuclei production in Au+Au collisions at √sNN = 3 GeV were performed within the updated three-fluid hydrodynamics-based event simulator extended by UrQMD (ultrarelativistic quantum molecular dynamics) final state interactions (THESEUS). The light (hyper)nuclei are treated thermodynamically, i.e., they are considered …

Examination of STAR fixed-target data on directed flow at √sNN=3 and 4.5 GeV

Yu. B. Ivanov and M. Kozhevnikova We present results of simulations of directed flow of various hadrons in Au + Au collisions at collision energies of √sNN = 3 and 4.5 GeV. Simulations are performed within the model three-fluid dynamics and the event simulator based on it (THESEUS). The results are compared …

Technical Design Report of the Spin Physics Detector at NICA

The SPD Collaboration: V. Abazov, V. Abramov, L. Afanasyev, R. Akhunzyanov, A. Akindinov, I. Alekseev, A. Aleshko, V. Alexakhin, G. Alexeev, L. Alimov, A. Allakhverdieva, A. Amoroso, V. Andreev, V. Andreev, E. Andronov, Yu. Anikin, S. Anischenko, A. Anisenkov, V. Anosov, E. Antokhin, A. Antonov, S. Antsupov, A. Anufriev, K. Asadova, S. Ashraf, V. Astakhov, A. Aynikeev, M. Azarkin, N. Azorskiy, A. Bagulya, D. Baigarashev, A. Baldin, E. Baldina, N. Barbashina, A. Barnyakov, S. Barsov, A. Bartkevich, V. Baryshevsky, K. Basharina, A. Baskakov, V. Baskov, M. Batista, M. Baturitsky, V. Bautin, T. Bedareva, S. Belokurova, A. Belova, E. Belyaeva, A. …

К теоретической интерпретации данных о взаимодействиях ядер аргона с ядрами при высоких энергиях

В. В. Ужинский, А. С. Галоян, Н. А. Чалый Недавно (2024 г.) коллаборация NA61/SHINE представила экспериментальные данные о рождении π±, K±, протонов и антипротонов в центральных 40Ar +45 Sc взаимодействиях при Plab = 13−150 A · ГэВ/c. Коллаборация сравнила данные с предсказаниями популярных теоретических моделей. Оказалось, что модели неудовлетворительно описывают …

Possible Studies of Two-Particle Transverse Momentum Correlations in Proton–Proton and Deuteron–Deuteron Interactions at NICA Energies

A. Galoyan, A. Ribon & V. Uzhinsky  Two-particle transverse momentum (PT) correlations are investigated for proton–proton and deuteron–deuteron interactions at the center-of-mass energy of NN collisions of 10 GeV. The correlations between Λ—hyperons and anti-Λ—hyperons, K-, π—mesons and protons are calculated using the Geant4 FTF and Pythia 6.4 models. It is shown that PT correlations between Λ—hyperons and …

Tuning the Geant4 FTF Model Using Experimental Data of the NA61/SHINE Collaboration

A. Galoyan, V. Uzhinsky The NA61/SHINE collaboration measured inclusive cross sections of \pi^+ and \pi^- meson production in the interactions of 31 GeV/c protons with carbon nuclei at forward emission angles (0 — 420 mrad). The collaboration also presented predictions of Monte Carlo models — FLUKA, VENUS and UrQMD, in …

Three-dimensional calculations of positron creation in supercritical collisions of heavy nuclei

N. K. Dulaev, D. A. Telnov, V. M. Shabaev, Y. S. Kozhedub, X. Ma, I. A. Maltsev, R. V. Popov , and I. I. Tupitsyn Energy-angle differential and total probabilities of positron creation in slow supercritical collisions of two identical heavy nuclei are calculated beyond the monopole approximation. The time-dependent …

QED calculations of intra-L-shell singly excited states in Be-like ions

A. V. Malyshev, Y. S. Kozhedub, V. M. Shabaev, and I. I. Tupitsyn The ab initio approach is used to evaluate the excitation energies of the 2⁢s⁢2p⁢2S+1⁢PJ states from the ground state as well as the 2⁢s⁢2p⁢3P1→ 2⁢s⁢2p⁢3P0 and 2⁢s⁢2p⁢3P2→2s⁢2p⁢3P1 transition energies for selected Be-like highly charged ions over a wide …