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Universe 2018, 4(3), 52; https://doi.org/10.3390/universe4030052

Looking for the Phase Transition—Recent NA61/SHINE Results

Institute of Theoretical Physics, University of Wroclaw, pl. M. Borna 9, 50-205 Wroclaw, Poland
For the NA61/SHINE Collaboration.
Received: 16 January 2018 / Revised: 13 February 2018 / Accepted: 19 February 2018 / Published: 9 March 2018
(This article belongs to the Special Issue Compact Stars in the QCD Phase Diagram)
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Abstract

The fixed-target NA61/SHINE experiment at the CERN Super Proton Synchrotron (SPS) seeks to find the critical point (CR) of strongly interacting matter as well as the properties of the onset of deconfinement. The experiment provides a scan of measurements of particle spectra and fluctuations in proton–proton, proton–nucleus, and nucleus–nucleus interactions as functions of collision energy and system size, corresponding to a two-dimensional phase diagram (T- μ B ). New NA61/SHINE results are shown here, including transverse momentum and multiplicity fluctuations in Ar+Sc collisions as compared to NA61 p+p and Be+Be data, as well earlier NA49 A+A results. Recently, a preliminary effect of change in the system size dependence, labelled as the “percolation threshold” or the “onset of fireball”, was observed in NA61/SHINE data. This effect is closely related to the vicinity of the hadronic phase space transition region and will be discussed in the text. View Full-Text
Keywords: QCD matter; phase transition; critical point QCD matter; phase transition; critical point
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Turko, L. Looking for the Phase Transition—Recent NA61/SHINE Results. Universe 2018, 4, 52.

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