Event shape dependence of anisotropic flow for inclusive and identified hadrons in Pb–Pb and Xe–Xe collisions with ALICE

• Published in: Nuclear physics. A 2021-01, Vol.1005, p.121759, Article 121759
• Main Author: Besoiu, M.
• Format: Article
• Language: English
• Subjects: ALICE; Anisotropic flow; Event Shape Engineering
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2020.121759

Event Shape Engineering technique has been used to select events corresponding to a specific initial geometry in a given centrality class. For those events, the elliptic (ν2) and triangular (ν3) flow coefficients of inclusive as well as identified particles, including π±, K±, p+p‾, KS0, Λ+Λ‾, and Ξ−+Ξ‾+ are measured in Pb–Pb collisions at sNN=5.02TeV recorded by ALICE. In addition, the ν2 of π±, K±, p+p‾, KS0, and Λ+Λ‾ from Xe–Xe collisions at sNN=5.44TeV is presented. The results obtained using the scalar product method are reported as a function of transverse momentum, pT, within the pseudorapidity (rapidity) range |η| < 0.8 (|y| < 0.5) for various centrality classes. The flow coefficients exhibit a particle mass dependence for pT < 2–3 GeV/c and type grouping (i.e., mesons and baryons) at a higher pT region. The ratios between νn for shape selected and unbiased events are almost flat up to pT = 10 GeV/c, independent of particle species.