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Event shape dependence of anisotropic flow for inclusive and identified hadrons in Pb–Pb and Xe–Xe collisions with ALICE
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 ( ν 2 ) and triangular ( ν 3 ) flow coefficients of inclusive as well as identified particles, including π ± , K ± , p+p‾ , KS0 ,...
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Lenguaje: | eng |
Publicado: |
2021
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysa.2020.121759 http://cds.cern.ch/record/2751708 |
Sumario: | 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 ( ν 2 ) and triangular ( ν 3 ) 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 ν 2 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, p T , within the pseudorapidity (rapidity) range | η | < 0.8 (| y | < 0.5) for various centrality classes. The flow coefficients exhibit a particle mass dependence for p T < 2–3 GeV/ c and type grouping (i.e., mesons and baryons) at a higher p T region. The ratios between ν n for shape selected and unbiased events are almost flat up to p T = 10 GeV/ c , independent of particle species. |
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