Overview of Results from NA61/SHINE: Uncovering Critical Structures

Gaździcki, M.; Rybicki, A.

doi:10.5506/aphyspolb.50.1057

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…Nuclear collisions are usually described by increasingly complex statistical models that try to account for all possible collective effects [ 32 , 33 , 34 ]. Because, however, for our purposes, the mutual relation between the entropies of

and

collisions will be important, to estimate the entropy in the nuclear collision, it will therefore be more convenient to use the phenomenological description based on the assumption that it can be described by a certain superposition of collisions of single nucleons (taking into account only nucleons that collided at least once and assuming that their collisions are independent—these are the so-called “wounded nucleons”) [ 35 ].…”

Section: From Tsalis Entropy To Tsalis Distributionmentioning

confidence: 99%

Some Non-Obvious Consequences of Non-Extensiveness of Entropy

Wilk

Włodarczyk

2023

Entropy

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Non-additive (or non-extensive) entropies have long been intensively studied and used in various fields of scientific research. This was due to the desire to describe the commonly observed quasi-power rather than the exponential nature of various distributions of the variables of interest when considered in the full available space of their variability. In this work we will concentrate on the example of high energy multiparticle production processes and will limit ourselves to only one form of non-extensive entropy, namely the Tsallis entropy. We will discuss some points not yet fully clarified and present some non-obvious consequences of non-extensiveness of entropy when applied to production processes.

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and

Section: From Tsalis Entropy To Tsalis Distributionmentioning

confidence: 99%

Some Non-Obvious Consequences of Non-Extensiveness of Entropy

Wilk

Włodarczyk

2023

Entropy

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“…Effective theories take this prediction as a starting point, but they are not forced to agree with each other with the qualitative aspects of the QCD phase diagram at finite chemical potential [24,33]. Experimentally, many ultra-relativistic heavy ion collisions performed at the LHC [34,35], RHIC [36], NICA [37], SPS [38], NA61/SHINE [39] and many other research centers can give insight about the QCD phase diagram itself.…”

Section: Introductionmentioning

confidence: 99%

Effects of a Finite Volume in the Phase Structure of QCD

et al. 2022

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Working in the SU(2) flavor version of the NJL model, we study the effect of taking a finite system volume on a strongly interacting system of quarks, and, in particular, the location of the chiral phase transition and the CEP. We consider two shapes for the volume, spherical and cubic regions with different sizes and different boundary conditions. To analyze the QCD phase diagram, we use a novel criterion to study the crossover zone. A comparison between the results obtained from the two different shapes and several boundary conditions is carried out. We use the method of Multiple Reflection Expansion to determine the density of states and three kinds of boundary conditions over the cubic shape. These boundary conditions are: periodic, anti-periodic and stationary boundary conditions on the quark fields.

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“…The main focus of the NA61/SHINE programme of studies of strongly interacting matter via a two-dimensional beam momentum and system size scan are central collisions [1,2]. In recent years, however, new additions to the programme emerged which concentrate on non-central collisions, where specific collective effects appear.…”

Section: Introductionmentioning

confidence: 99%

Strong and Electromagnetic Collective Effects from NA61/SHINE

Marcinek¹

2019

Acta Phys. Pol. B

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This contribution presents new NA61/SHINE results on collective effects, including spectator-induced electromagnetic (EM) phenomena in charged pion emission in collisions at beam momentum of 150A GeV/c as well as directed flow for protons and charged pions as a function of transverse momentum and centrality in Pb+Pb collisions at 30A GeV/c. EM effects bring new, independent information on the space-time properties of the system. They may also suggest presence of the fast-moving participant charge close to the spectator system, as well as relatively fast spectator decay. The results on the directed flow at CERN SPS energies are complementary to STAR results and provide a bridge to FAIR and NICA energies. A specific picture of the longitudinal evolution of the system at CERN SPS energies emerges, where the centrality dependence of pion rapidity spectra is governed predominantly by the simple energy-momentum conservation and the collision geometry.

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Overview of Results from NA61/SHINE: Uncovering Critical Structures

Cited by 3 publications

References 27 publications

Some Non-Obvious Consequences of Non-Extensiveness of Entropy

Some Non-Obvious Consequences of Non-Extensiveness of Entropy

Effects of a Finite Volume in the Phase Structure of QCD

Strong and Electromagnetic Collective Effects from NA61/SHINE

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