vestifmИзвестия Национальной академии наук Беларуси. Серия физико-математических наукProceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series1561-24302524-2415The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-2430-2020-56-1-84-91vestifm-507Research ArticleФИЗИКАPHYSICSМонте-Карло моделирование фазового перехода адроны-КГП в столкновениях тяжелых ионов с помощью партонной моделиMonte-Carlo simulation of the 1st order hadron-QGP phase transition in heavy ion collisions using a parton modelРусакЮ. А.RusakYu. A.

Русак Юрий Александрович – младший научный сотрудник

Yury A. Rusak – Junior Researcher

99, Akademika Krasina Str., 220109, Minsk

wevelyura@gmail.comБабичевЛ. Ф.BabichevL. F.

Бабичев Леонид Филиппович – кандидат физико-математических наук, заведующий лабораторией

Leonid F. Babichev – Ph. D. (Physics and Mathematics), Head of Laboratory

99, Akademika Krasina Str., 220109, Minsk

babichev@sosny.bas-net.byОбъединенный институт энергетических и ядерных исследований – Сосны Национальной академии наук БеларусиJoint Institute for Power and Nuclear Research – Sosny, of the National Academy of Sciences of Belarus2020060420205618491Copyright © Русак Ю.А., Бабичев Л.Ф., 20202020Русак Ю.А., Бабичев Л.Ф.Rusak Y.A., Babichev L.F.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestifm.belnauka.by/jour/article/view/507

Кварк-глюонная плазма (КГП) является особым состоянием ядерной материи, при котором кварки и глюоны ведут себя как свободные частицы. В настоящее время проводятся исследования этого состояния вещества с высокими температурой и/или плотностью с помощью столкновений релятивистских и ультрарелятивистских тяжелых ядер. Считается, что адронная материя испытывает (в зависимости от температуры и плотности) фазовый переход первого или второго рода при образовании КГП. В данной статье были промоделированы столкновения тяжелых ионов с помощью Монте-Карло генератора HIJING с учетом описания фазового перехода первого рода как вероятностного процесса и проанализировано поведение флуктуаций полного (N = N+ – N–) и результирующего (Q = N+ – N–) электрических зарядов системы. Разные фазы были заданы с помощью BDMPS (Baier – Dokshitzer – Mueller – Piegne – Schiff) модели потери партонной энергии при прохождении через плотное ядерное вещество.

Quark gluon plasma (QGP) is a special state of nuclear matter where quarks and gluons behave like free particles. Recently, a number of investigations of this state with high temperature and/or density have been conducted using collisions of relativistic and ultra-relativistic heavy nuclei. It is accepted that depending on the temperature and density, 1st or the 2nd order phase transitions take place in hadron matter during the formation of QGP. Herein, we have modeled heavy ion collisions using a HIJING Monte-Carlo generator, taking into account the description of the 1st order phase transition as a probabilistic process. We analyzed the behavior of the fluctuations of the total (N = N+ – N–) and resultant (Q = N+ – N–) electric charges of the system. Different phases were introduced using the BDMPS (Baier – Dokshitzer – Mueller – Piegne – Schiff) model of parton energy loss during crossing through a dense nuclear medium.

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The authors declare that there are no conflicts of interest present.