Персона: Тараненко, Аркадий Владимирович
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Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Тараненко
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Аркадий Владимирович
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- ПубликацияОткрытый доступPattern of global spin alignment of ϕ and K*0 mesons in heavy-ion collisions(2023) Abdallah, M. S.; Aboona, B. E.; Adam, J.; Adamczyk, L.; Alekseev I.; Brandin A. V.; Kochenda L.; Kravtsov P.; Nigmatkulov G.; Okorokov V. A.; Parfenov P.; Strikhanov M.; Taranenko A.; Vasiliev A. N.; Алексеев, Игорь Геннадьевич; Брандин, Андрей Владимирович; Нигматкулов, Григорий Александрович; Окороков, Виталий Алексеевич; Парфенов, Петр Евгеньевич; Стриханов, Михаил Николаевич; Тараненко, Аркадий Владимирович; Васильев, Александр НиколаевичNotwithstanding decades of progress since Yukawa first developed a description of the force between nucleons in terms of meson exchange1, a full understanding of the strong interaction remains a considerable challenge in modern science. One remaining difficulty arises from the non-perturbative nature of the strong force, which leads to the phenomenon of quark confinement at distances on the order of the size of the proton. Here we show that, in relativistic heavy-ion collisions, in which quarks and gluons are set free over an extended volume, two species of produced vector (spin-1) mesons, namely П• and K*0, emerge with a surprising pattern of global spin alignment. In particular, the global spin alignment for П• is unexpectedly large, whereas that for K*0 is consistent with zero. The observed spin-alignment pattern and magnitude for П• cannot be explained by conventional mechanisms, whereas a model with a connection to strong force fields2–6, that is, an effective proxy description within the standard model and quantum chromodynamics, accommodates the current data. This connection, if fully established, will open a potential new avenue for studying the behaviour of strong force fields. At the Relativistic Heavy Ion Collider, observations of two meson species produced by heavy-ion collisions, П• and K*0, show surprising patterns of global spin alignment, being unexpectedly large and consistent with zero, respectively.
- ПубликацияОткрытый доступToward the System Size Dependence of Anisotropic Flow in Heavy-Ion Collisions at vs(NN)=2-5 GeV(2023) Mamaev, M.; Taranenko, A.; Мамаев, Михаил Валерьевич; Тараненко, Аркадий ВладимировичThe study of the high-density equation of state (EOS) and the search for a possible phase transition in dense baryonic matter is the main goal of beam energy scan programs with relativistic heavy ions at energies vs(NN)= 2-5 GeV. The most stringent constraints currently available on the high-density EOS of symmetric nuclear matter come from the present measurements of directed (v(1)) and elliptic flow (v(2)) signals of protons in Au + Au collisions. In this energy range, the anisotropic flow is strongly affected by the presence of cold spectators due to the sizable passage time. The system size dependence of anisotropic flow may help to study the participant-spectator contribution and improve our knowledge of the EOS of symmetric nuclear matter. In this work, we discuss the layout of the upgraded BM@N experiment and the anticipated performance for differential anisotropic flow measurements of identified hadrons at Nuclotron energies: v???????s(NN)= 2.3-3.5 GeV.