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Al-Turany, M.; Aleksandrov, D.; Andrei, C.; Angeletti, M.; Arsene, I. C.; Arslandok, M.; Baldisseri, A.; Barioglio, L.; Bartalini, P.; Berenyi, D.; Caliva, A.; Castro, A. J.; Chang, B.; Chattopadhyay, S.; Chujo, T.; Collu, A.; Conesa Balbastre, G.; Cormier, T. M.; Costanza, S.; Das, D.; Dash, S.; De Falco, A.; De Gruttola, D.; Doremalen, L. V. R.; Dukhishyam, M.; Erazmus, B.; Feofilov, G.; Filchagin, S.; Foertsch, S.; Garcia-Solis, E.; Garg, K.; Ghosh, J.; Giubellino, P.; Gomez Ramirez, A.; Grigoryan, A.; Guernane, R.; Helstrup, H.; Herghelegiu, A.; Huang, C.; Hughes, C.; Jacak, B.; Jimenez Bustamante, R. T.; Jones, P. G.; Kar, S.; Ketzer, B.; Khatun, A.; Kirsch, S.; Kiselev, S.; Kondratyeva, N.; Kravčáková, A.; Lee, S.; Lehas, F.; Lemmon, R. C.; Loizides, C.; Lupi, M.; Malik, Q. W.; Mao, Y.; Marquard, M.; Menchaca-Rocha, A.; Mohanty, B.; Mühlheim, D.; Nikulin, V.; Pacik, V.; Palni, P.; Pareek, P.; Peitzmann, T.; Pereira Da Costa, H.; Peskov, V.; Pestov, Y.; Petráček, V.; Pillot, P.; Rami, F.; Raniwala, R.; Read, K. F.; Roslon, K.; Rui, R.; Rybicki, A.; Sarma, P.; Sekiguchi, Y.; Shabanov, A.; Sharma, A.; Sharma, M.; Shtejer, K.; Snellings, R. J. M.; Strmen, P.; Sugitate, T.; Swain, S.; Trombetta, G.; Uras, A.; Varga, D.; Vargyas, M.; Varma, R.; Vergara Limón, S.; Vislavicius, V.; Voloshin, K.; Voloshin, S. A.; Weber, M.; Wiechula, J.; Zhao, C.; Zimmermann, M. B.
The journal of high energy physics, 09/2018, Letnik: 2018, Številka: 9Journal Article
A bstract The elliptic ( v 2 ), triangular ( v 3 ), and quadrangular ( v 4 ) flow coefficients of π ± , K ± , p + p ¯ , Λ + Λ ¯ , K S 0 , and the ϕ -meson are measured in Pb-Pb collisions at s N N = 5.02 TeV. Results obtained with the scalar product method are reported for the rapidity range | y | < 0.5 as a function of transverse momentum, p T , at different collision centrality intervals between 0–70%, including ultra-central (0–1%) collisions for π ± , K ± , and p + p ¯ . For p T < 3 GeV /c , the flow coefficients exhibit a particle mass dependence. At intermediate transverse momenta (3 < p T < 8–10 GeV/ c ), particles show an approximate grouping according to their type (i.e., mesons and baryons). The ϕ -meson v 2 , which tests both particle mass dependence and type scaling, follows p + p ¯ v 2 at low p T and π ± v 2 at intermediate p T . The evolution of the shape of v n ( p T ) as a function of centrality and harmonic number n is studied for the various particle species. Flow coefficients of π ± , K ± , and p + p ¯ for p T < 3 GeV/ c are compared to iEBE-VISHNU and MUSIC hydrodynamical calculations coupled to a hadronic cascade model (UrQMD). The iEBE-VISHNU calculations describe the results fairly well for p T < 2.5 GeV/ c , while MUSIC calculations reproduce the measurements for p T < 1 GeV/ c . A comparison to v n coefficients measured in Pb-Pb collisions at s N N = 2.76 TeV is also provided.
