Possible signals of two QCD phase transitions at NICA-FAIR energies

K. A. Bugaev; A. I. Ivanytskyi; V. V. Sagun; B. E. Grinyuk; D. O. Savchenko; G. M. Zinovjev; E. G. Nikonov; L. V. Bravina; E. E. Zabrodin; D. B. Blaschke; S. Kabana; A. V. Taranenko

doi:10.1051/epjconf/201920403001

Proceedings

Open Access

EPJ Web of Conferences 204, 03001 (2019)
https://doi.org/10.1051/epjconf/201920403001

Possible signals of two QCD phase transitions at NICA-FAIR energies

K. A. Bugaev¹^*, A. I. Ivanytskyi¹^,2, V. V. Sagun¹^,3, B. E. Grinyuk¹, D. O. Savchenko¹, G. M. Zinovjev¹, E. G. Nikonov⁴, L. V. Bravina⁵, E. E. Zabrodin⁵^,6^,7, D. B. Blaschke⁷^,8^,9, S. Kabana¹⁰^,11 and A. V. Taranenko⁷

¹ Bogolyubov Institute for Theoretical Physics of the National Academy of Sciences of Ukraine, 03680 Kiev, Ukraine
² Department of Fundamental Physics, University of Salamanca, Plaza de la Merced s/n 37008, Spain
³ Centro de Astrofísica e Gravitação - CENTRA, Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
⁴ Laboratory of Information Technologies, Joint Institute for Nuclear Research, Dubna 141980, Russia
⁵ Department of Physics, University of Oslo, PB 1048 Blindern, N-0316 Oslo, Norway
⁶ Skobeltzyn Institute of Nuclear Physics, Moscow State University, 119899 Moscow, Russia
⁷ National Research Nuclear University “MEPhI” (Moscow Engineering Physics Institute), 115409 Moscow, Russia
⁸ Institute of Theoretical Physics, University of Wroclaw, pl. M. Borna 9, 50-204 Wroclaw, Poland
⁹ Bogoliubov Laboratory of Theoretical Physics, JINR Dubna, Joliot-Curie str. 6, 141980 Dubna, Russia
¹⁰ University of Nantes, Faculté des Sciences et des Techniques, 2, rue de la Houssiniére, 44322 Nantes, France
¹¹ SUBATECH, Ecole des Mines, 4 rue Alfred Kastler, 44307 Nantes, France

^* e-mail: Bugaev@th.physik.uni-frankfurt.de

Published online: 3 April 2019

Abstract

The chemical freeze-out irregularities found with the most advanced hadron resonance gas model and possible signals of two QCD phase transitions are discussed. We have found that the center-of-mass collision energy range of tricritical endpoint of QCD phase diagram is [9; 9.2] GeV which is consistent both with the QCD inspired exactly solvable model and experimental findings.

© The Authors, published by EDP Sciences, 2019

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