Feasibility study of heavy ion physics program at NICA

Journal Article · Fri Jul 15 00:00:00 EDT 2016 · Physics of Particles and Nuclei

DOI:https://doi.org/10.1134/S1063779616040031· OSTI ID:22981759

Kekelidze, V. D.; Kolesnikov, V. I.; Rogachevsky, O. V. ^[1]; Sorin, A. S. ^[1]; Voronyuk, V. V. ^[1]

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1. Joint Institute for Nuclear Research, Dubna (Russian Federation)

There are strong experimental and theoretical evidences that in collisions of heavy ions at relativistic energies nuclear matter undergoes a phase transition to the deconfined state—Quark Gluon Plasma. The caused energy region of such transition was not found at high energy at SPS and RHIC and search for this energy is shifted to lower energies, which will be covered by the future NICA (Dubna), FAIR (Darmstadt) facilities and BES II at RHIC. Fixed target and collider experiments at the NICA facility will work at the energy range from a few AGeV up to √( S{sub NN}) = 11 GeV GeV and will study the most interesting area on the nuclear matter phase diagram. The most remarkable results were observed in the study of collective phenomena occurring in the early stage of nuclear collisions. Investigation of the collective flow will provide information on Equation of State (EoS) for nuclear matter. Study of the Event-by-Event fluctuations and correlations can give us signals of critical behavior of the system. Femtoscopy analysis provides the space-time history of the collisions. Also, it was found that baryon stopping power revealing itself as a “wiggle” in excitation function of curvature of the (net)proton rapidity spectrum relates to the order of the phase transition. The available observations of an enhancement of dilepton rates at low invariant masses may serve as a signal of the chiral symmetry restoration in hot and dense matter. Due to this fact, measurements of the dilepton spectra are considered to be an important part of the NICA physics program. The study of strange particles and hypernuclei production gives additional information on the EoS and “strange” axis of the QCD phase diagram. In this paper a feasibility of the considered investigations is shown by the detailed Monte Carlo simulations applied to the planned experiments (BM@N, MPD) at NICA.

• OSTI ID: 22981759
• Journal Information: Physics of Particles and Nuclei, Vol. 47, Issue 4; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7796
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BROOKHAVEN RHIC
CHIRAL SYMMETRY
COLLISIONS
EQUATIONS OF STATE
EXCITATION FUNCTIONS
FEASIBILITY STUDIES
HEAVY IONS
MONTE CARLO METHOD
NUCLEAR MATTER
PARTICLE RAPIDITY
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PROTON SPECTRA
QUANTUM CHROMODYNAMICS
QUARK MATTER
SPACE-TIME