Number of the records: 1  

Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV

  1. 1.
    SYSNO ASEP0492102
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleAzimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV
    Author(s) Adamczyk, L. (PL)
    Adams, J. R. (US)
    Adkins, J. K. (US)
    Agakishiev, G. (RU)
    Aggarwal, M. M. (IN)
    Bielčík, J. (CZ)
    Bielčíková, Jana (UJF-V) RID, ORCID, SAI
    Chaloupka, P. (CZ)
    Federič, Pavol (UJF-V) ORCID, SAI
    Federičová, P. (CZ)
    Harlenderová, A. (CZ)
    Kocmánek, Martin (UJF-V)
    Kvapil, J. (CZ)
    Lidrych, J. (CZ)
    Rusňák, Jan (UJF-V) RID, ORCID, SAI
    Rusňáková, O. (CZ)
    Šaur, Miroslav (UJF-V)
    Šimko, Miroslav (UJF-V) ORCID, SAI
    Šumbera, Michal (UJF-V) RID, ORCID, SAI
    Trzeciak, B. A. (CZ)
    Number of authors347
    Article number014915
    Source TitlePhysical Review C. - : American Physical Society - ISSN 2469-9985
    Roč. 98, č. 1 (2018)
    Number of pages22 s.
    Publication formPrint - P
    Languageeng - English
    CountryUS - United States
    KeywordsSTAR ; heavy ion collisions ; energy
    Subject RIVBG - Nuclear, Atomic and Molecular Physics, Colliders
    OECD categoryNuclear physics
    R&D ProjectsEF16_013/0001569 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Institutional supportUJF-V - RVO:61389005
    UT WOS000440384600004
    EID SCOPUS85051845146
    DOI10.1103/PhysRevC.98.014915
    AnnotationThe azimuthal anisotropic flow of identified and unidentified charged particles has been systematically studied in Cu+Au collisions at root s(NN) = 200 GeV for harmonics n = 1-4 in the pseudorapidity range vertical bar eta vertical bar < 1. The directed flow in Cu+Au collisions is compared with the rapidity-odd and, for the first time, the rapidity-even components of charged particle directed flow in Au+Au collisions at root s(NN) = 200 GeV. The slope of the directed flow pseudorapidity dependence in Cu+Au collisions is found to be similar to that in Au+Au collisions, with the intercept shifted toward positive pseudorapidity values, i.e., the Cu-going direction. The mean transverse momentum projected onto the spectator plane p(x) in Cu+Au collision also exhibits approximately linear dependence on pseudorapidity with the intercept at about eta approximate to -0.4 (shifted from zero in the Au-going direction), closer to the rapidity of the Cu+Au system center of mass. The observed dependencies find a natural explanation in a picture of the directed flow originating partly due the 'tilted source' and partly due to the asymmetry in the initial density distribution. A charge dependence of p(x) was also observed in Cu+Au collisions, consistent with an effect of the initial electric field created by charge difference of the spectator protons in two colliding nuclei. The rapidity-even component of directed flow in Au+Au collisions is close to that in Pb+Pb collisions at root s(NN) = 2.76 TeV, indicating a similar magnitude of dipolelike fluctuations in the initial-state density distribution. Higher harmonic flow in Cu+Au collisions exhibits similar trends to those observed in Au+Au and Pb+Pb collisions and is qualitatively reproduced by a viscous hydrodynamic model and a multiphase transport model. For all harmonics with n >= 2 we observe an approximate scaling of v(n) with the number of constituent quarks, this scaling works as well in Cu+Au collisions as it does in Au+Au collisions.
    WorkplaceNuclear Physics Institute
    ContactMarkéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
    Year of Publishing2019
Number of the records: 1  

  This site uses cookies to make them easier to browse. Learn more about how we use cookies.