Beam Energy Dependence of Fifth- and Sixth-Order Net-Proton Number Fluctuations in Au plus Au Collisions at RHIC
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00367690" target="_blank" >RIV/68407700:21340/23:00367690 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevLett.130.082301" target="_blank" >https://doi.org/10.1103/PhysRevLett.130.082301</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.130.082301" target="_blank" >10.1103/PhysRevLett.130.082301</a>
Alternative languages
Result language
angličtina
Original language name
Beam Energy Dependence of Fifth- and Sixth-Order Net-Proton Number Fluctuations in Au plus Au Collisions at RHIC
Original language description
We report the beam energy and collision centrality dependence of fifth and sixth order cumulants (C-5, C-6) and factorial cumulants (kappa(5),kappa(6)) of net-proton and proton number distributions, from center-of mass energy ( root(NN)-N-s) 3 GeV to 200 GeV Au thorn Au collisions at RHIC. Cumulant ratios of net-proton (taken as proxy for net-baryon) We report the beam energy and collision centrality dependence of fifth and sixth order cumulants (C-5, C-6) and factorial cumulants (kappa(5), kappa(6)) of net-proton and proton number distributions, from center-of-mass energy (root(NN)-N-s) 3 GeV to 200 GeV Au thorn Au collisions at RHIC. Cumulant ratios of net-proton (taken sNN as proxy for net-baryon) distributions generally follow the hierarchy expected from QCD thermodynamics, except for the case of collisions at 3 GeV. The measured values of C-6/C-2 for 0%-40% centrality collisions show progressively negative trend with decreasing energy, while it is positive for the lowest energy studied. These observed negative signs are consistent with QCD calculations (for baryon chemical potential, mu(B) <= 110 MeV) which contains the crossover transition range. In addition, for energies above 7.7 GeV, the measured proton kappa(n), within uncertainties, does not support the two-component (Poisson thorn binomial) shape of proton number distributions that would be expected from a first-order phase transition. Taken in combination, the hyperorder proton number fluctuations suggest that the structure of QCD matter at high baryon density, mu(B) similar to 750 MeV at root(NN)-N-s = 3 GeV is starkly different from those at vanishing sNN mu(B) similar to 24 MeV at root(NN)-N-s = 200 GeV and higher collision energies. sNN
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
<a href="/en/project/LM2018109" target="_blank" >LM2018109: Brookhaven National Laboratory - the participation of the Czech Republic</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
1079-7114
Volume of the periodical
130
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
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UT code for WoS article
000982318800009
EID of the result in the Scopus database
2-s2.0-85149659741