Validation of z-scaling for negative particle production in Au + Au collisions from BES-I at STAR

Tokarev, M.; Kechechyan, A.; Zborovský, I.

doi:10.1016/j.nuclphysa.2019.121646

Cited by 18 publications

(17 citation statements)

References 114 publications

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“…The self-similarity is an evident feature of fireballs and hadrons according to their definitions by Hagedorn and Frautschi, respectively, as described above. However, many other evidences point to the self-similar structure of hadrons: fractal dimension has been identified through the analysis of intermittence in experimental distributions obtained in HEP experiments [41][42][43][44][45][46][47][48][49][50]; a parton distribution function (PDF) that describes the proton structure based on fractal properties was shown to fit experimental data rather well [51]; direct evidences of self-similarity in experimental data has been observed [52], but the so-called z-scaling [53,54] might be related to fractal structures, as well.…”

Section: Thermofractalsmentioning

confidence: 99%

Fractal Structures of Yang–Mills Fields and Non-Extensive Statistics: Applications to High Energy Physics

Deppman

Megías

Menezes

2020

Physics

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In this work, we provide an overview of the recent investigations on the non-extensive Tsallis statistics and its applications to high energy physics and astrophysics, including physics at the Large Hadron Collider (LHC), hadron physics, and neutron stars. We review some recent investigations on the power-law distributions arising in high energy physics experiments focusing on a thermodynamic description of the system formed, which could explain the power-law behavior. The possible connections with a fractal structure of hadrons is also discussed. The main objective of the present work is to delineate the state-of-the-art of those studies and show some open issues that deserve more careful investigation. We propose several possibilities to test the theory through analyses of experimental data.

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Section: Thermofractalsmentioning

confidence: 99%

Fractal Structures of Yang–Mills Fields and Non-Extensive Statistics: Applications to High Energy Physics

Deppman

Megías

Menezes

2020

Physics

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“…The symbols nearly coincide with the solid curve depicting z-scaling of h − particles produced in p + p collisions. The same energy independence of ψ(z) is valid [3] for different centrality classes of Au+Au collisions.…”

Section: Self-similarity Of Negative Hadron Production In Au + Au Collisionsmentioning

confidence: 68%

“…The scaling was obtained for ε AuAu = ε 0 (2dN AuAu neg /dη) + ε pp with a suitable choice of ε 0 and for the constant values of the model parameters c AuAu = 0.11, δ A = Aδ , δ = 0.5, and ε pp = 0.2 at √ s NN 19.6 GeV. The parameter ε 0 shows [3] a logarithmic increase with √ s NN . It reflects the growing suppression of hadron yields in the central collisions of heavy nuclei.…”

Section: Self-similarity Of Negative Hadron Production In Au + Au Collisionsmentioning

confidence: 96%

“…This physical principle is assumed to be valid also in the high-density and hightemperature phase in which quark and gluon degrees of freedom dominate. Figure 2 function ψ(z) for negative hadrons [3] produced in (0−5)% central Au+ Au collisions at different √ s NN = 7.7 − 200 GeV. The symbols correspond to spectra [6] measured by the STAR Collaboration at the pseudorapidity |η| < 0.5.…”

Section: Self-similarity Of Negative Hadron Production In Au + Au Collisionsmentioning

confidence: 99%

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Self-similarity, fractality and entropy principle in collisions of hadrons and nuclei at Tevatron, RHIC and LHC

Zborovský¹,

Tokarev²

2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

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Scaling of inclusive spectra as a manifestation of self-similarity and fractality of hadron interactions is illustrated. The scaling for negative particle production in Au + Au collisions from BES-I program at RHIC is demonstrated. The scaling variable z depends on the momentum fractions of the colliding objects carried by the interacting constituents, and momentum fractions of the produced objects in the scattered and recoil directions, which carries the inclusive particle and its counterpart, respectively. Structures of the colliding objects and fragmentation processes in final state are expressed by fractal dimensions. Medium produced in the collisions is described by a specific heat. The scaling function ψ(z) reveals energy, angular, multiplicity, and flavor independence. It has a power behavior at high z (high p T ). Based on entropy principle and z-scaling, energy loss as a function of the collision energy, centrality and transverse momentum of inclusive particle is estimated. New conservation law including fractal dimensions is found. Quantization of fractal dimensions is discussed.

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“…The concept of the z-scaling is based on the fundamental principles of self-similarity, locality, and fractality of particle production in p+p and A+A interactions at a constituent level [1][2][3][4]. At sufficiently high energies, the collision of hadrons or nuclei is considered as an ensemble of individual interactions of their constituents.…”

Section: General Concept Of Z-scalingmentioning

confidence: 99%

First indication on self-similarity of strangeness production in $Au+Au$ collisions at RHIC: Search for signature of phase transition in nuclear matter

Tokarev¹,

Zborovsky²

2021

Preprint

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New results of analysis of K 0 S −meson spectra measured over a wide range of energy √ s N N = 7.7 − 200 GeV and centrality in Au + Au collisions by the STAR Collaboration at RHIC using the z-scaling approach are presented. Indication on self-similarity of fractal structure of nuclei and fragmentation processes with K 0 S probe is demonstrated. The energy loss as a function of the collision energy, centrality and transverse momentum of the inclusive strange meson is estimated.

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Validation of z-scaling for negative particle production in Au + Au collisions from BES-I at STAR

Cited by 18 publications

References 114 publications

Fractal Structures of Yang–Mills Fields and Non-Extensive Statistics: Applications to High Energy Physics

Fractal Structures of Yang–Mills Fields and Non-Extensive Statistics: Applications to High Energy Physics

Self-similarity, fractality and entropy principle in collisions of hadrons and nuclei at Tevatron, RHIC and LHC

First indication on self-similarity of strangeness production in $Au+Au$ collisions at RHIC: Search for signature of phase transition in nuclear matter

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Validation of z-scaling for negative particle production in Au + Au collisions from BES-I at STAR

Cited by 18 publications

References 114 publications

Fractal Structures of Yang–Mills Fields and Non-Extensive Statistics: Applications to High Energy Physics

Fractal Structures of Yang–Mills Fields and Non-Extensive Statistics: Applications to High Energy Physics

Self-similarity, fractality and entropy principle in collisions of hadrons and nuclei at Tevatron, RHIC and LHC

First indication on self-similarity of strangeness production in $Au+Au$ collisions at RHIC: Search for signature of phase transition in nuclear matter

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Validation of z-scaling for negative particle production in Au + Au collisions from BES-I at STAR