Measurements of Proton High-Order Cumulants in √sNN=3 GeV Au+Au Collisions and Implications for the QCD Critical Point
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00559939" target="_blank" >RIV/61389005:_____/22:00559939 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevLett.128.202303" target="_blank" >https://doi.org/10.1103/PhysRevLett.128.202303</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.128.202303" target="_blank" >10.1103/PhysRevLett.128.202303</a>
Alternative languages
Result language
angličtina
Original language name
Measurements of Proton High-Order Cumulants in √sNN=3 GeV Au+Au Collisions and Implications for the QCD Critical Point
Original language description
We report cumulants of the proton multiplicity distribution from dedicated fixed-target Au + Au collisions at root s(NN) = 3.0 GeV, measured by the STAR experiment in the kinematic acceptance of rapidity (y) and transverse momentum (p(T)) within -0.5 < y < 0 and 0.4 < p(T) < 2.0 GeV/c. In the most central 0%-5% collisions, a proton cumulant ratio is measured to be C-4/C-2 = -0.85 +/- 0.09 (stat) +/- 0.82 (syst), which is 2 sigma below the Poisson baseline with respect to both the statistical and systematic uncertainties. The hadronic transport UrQMD model reproduces our C-4/C-2 in the measured acceptance. Compared to higher energy results and the transport model calculations, the suppression in C-4/C-2 is consistent with fluctuations driven by baryon number conservation and indicates an energy regime dominated by hadronic interactions. These data imply that the QCD critical region, if created in heavy-ion collisions, could only exist at energies higher than 3 GeV.
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
10304 - Nuclear physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
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
128
Issue of the periodical within the volume
20
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
202303
UT code for WoS article
000807220600006
EID of the result in the Scopus database
2-s2.0-85131459646