Self-similarity of KS0-meson production in Au plus Au collisions from BES-I at STAR and anomaly of 'specific heat' and entropy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00560215" target="_blank" >RIV/61389005:_____/22:00560215 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.nuclphysa.2022.122492" target="_blank" >https://doi.org/10.1016/j.nuclphysa.2022.122492</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nuclphysa.2022.122492" target="_blank" >10.1016/j.nuclphysa.2022.122492</a>

Result language

angličtina

Original language name

Self-similarity of KS0-meson production in Au plus Au collisions from BES-I at STAR and anomaly of 'specific heat' and entropy

Original language description

We present results of analysis of K-S(0)-meson spectra in Au + Au collisions obtained by the STAR Collaboration in the first phase of the Beam Energy Scan program at RHIC using the z-scaling approach. The analyzed data on inclusive cross sections were measured over a wide range of collision energy root s(NN) = 7.7 - 200 GeV and transverse momentum of produced particles for different centralities in the rapidity range vertical bar y vertical bar < 0.5. A scaling behavior of the spectra in z-presentation is observed. The concept of the z-scaling is based on fundamental principles of self-similarity, locality, and fractality of hadron interactions at a constituent level. Structure of the colliding nuclei and fragmentation process in final state are described by fractal dimensions delta(A) and is an element of(AA), respectively. Produced medium is characterized by a 'specific heat' c(AA). Onset of constant delta(A), smooth increase of is an element of(AA) and anomalous behavior of c(AA) with collision energy in the scaling regime are observed. The self-similarity of fractal structure of nuclei and fragmentation processes with K-S(0) probe is demonstrated. The energy loss as a function of the collision energy, centrality and transverse momentum of the inclusive particle is estimated. An anomaly in the entropy behavior of system configurations in the region root s(NN) similar to 30 - 40 GeV at low pT in the central collisions is found. A possible signature of phase transition indicated by the peculiarities of specific heat and entropy as ingredients of the z-scaling of K-S(0)-meson production is discussed.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10304 - Nuclear physics

Project

<a href="/en/project/LTT19005" target="_blank" >LTT19005: Czech Participation at the International Experiment KATRIN</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nuclear Physics. A

ISSN

0375-9474

e-ISSN

1873-1554

Volume of the periodical

1025

Issue of the periodical within the volume

SEP

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

33

Pages from-to

122492

UT code for WoS article

000833597300002

EID of the result in the Scopus database

2-s2.0-85133813933