Correlation measurements between flow harmonics 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%2F61389005%3A_____%2F18%3A00493322" target="_blank" >RIV/61389005:_____/18:00493322 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/18:00328083
Result on the web
<a href="http://dx.doi.org/10.1016/j.physletb.2018.05.076" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2018.05.076</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2018.05.076" target="_blank" >10.1016/j.physletb.2018.05.076</a>
Alternative languages
Result language
angličtina
Original language name
Correlation measurements between flow harmonics in Au plus Au collisions at RHIC
Original language description
Flow harmonics (v(n)) in the Fourier expansion of the azimuthal distribution of particles are widely used to quantify the anisotropy in particle emission in high-energy heavy-ion collisions. The symmetric cumulants, SC(m, n), are used to measure the correlations between different orders of flow harmonics. These correlations are used to constrain the initial conditions and the transport properties of the medium in theoretical models. In this Letter, we present the first measurements of the four-particle symmetric cumulants in Au+Au collisions at root s(NN) = 39 and 200 GeV from data collected by the STAR experiment at RHIC. We observe that v(2) and v(3) are anti-correlated in all centrality intervals with similar correlation strengths from 39 GeV Au+Au to 2.76 TeV Pb+Pb (measured by the ALICE experiment). The v(2)-v(4) correlation seems to be stronger at 39 GeV than at higher collision energies. The initial-stage anti-correlations between second and third order eccentricities are sufficient to describe the measured correlations between v(2) and v(3). The best description of v(2)-v(4) correlations at root s(NN) = 200 GeV is obtained with inclusion of the system's nonlinear response to initial eccentricities accompanied by the viscous effect with eta/s > 0.08. Theoretical calculations using different initial conditions, equations of state and viscous coefficients need to be further explored to extract eta/s of the medium created at RHIC.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
<a href="/en/project/LTT18002" target="_blank" >LTT18002: Study of new properties of nuclear matter in the international experiment STAR</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics Letters. B
ISSN
0370-2693
e-ISSN
—
Volume of the periodical
783
Issue of the periodical within the volume
8
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
459-465
UT code for WoS article
000441762300063
EID of the result in the Scopus database
2-s2.0-85050264312