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Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at √s.sub.NN./sub.=2.76 with the ATLAS detector

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    0522643 - FZÚ 2020 RIV US eng J - Journal Article
    Aad, G. - Abbott, B. - Abdallah, J. - Böhm, Jan - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav
    Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at √sNN=2.76 with the ATLAS detector.
    European Physical Journal C. Roč. 74, č. 11 (2014), s. 1-28, č. článku 3157. ISSN 1434-6044. E-ISSN 1434-6052
    Institutional support: RVO:68378271
    Keywords : ATLAS * CERN LHC Coll * rapidity dependence * elliptic flow * higher-order * heavy ion: scattering * lead
    Subject RIV: BF - Elementary Particles and High Energy Physics
    OBOR OECD: Particles and field physics
    Impact factor: 5.084, year: 2014

    ATLAS measurements of the azimuthal anisotropy in lead–lead collisions at sNN−−−√=2.76 TeV are shown using a dataset of approximately 7 upmu b−1 collected at the LHC in 2010. The measurements are performed for charged particles with transverse momenta 0.5<pT<20 GeV and in the pseudorapidity range |η|<2.5 . The anisotropy is characterized by the Fourier coefficients, vn , of the charged-particle azimuthal angle distribution for n=2 –4. The Fourier coefficients are evaluated using multi-particle cumulants calculated with the generating function method. Results on the transverse momentum, pseudorapidity and centrality dependence of the vn coefficients are presented. The elliptic flow, v2 , is obtained from the two-, four-, six- and eight-particle cumulants while higher-order coefficients, v3 and v4 , are determined with two- and four-particle cumulants.
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