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  • J/ψ elliptic and triangular...
    Akbar, Z.; Al-Turany, M.; Alfanda, H. M.; Alizadehvandchali, N.; Aphecetche, L.; Aziz, S.; Badalà, A.; Belyaev, V.; Bertens, R. A.; Bielčíková, J.; Biswas, S.; Blair, J. T.; Borel, H.; Braun-Munzinger, P.; Caliva, A.; Castillo Castellanos, J.; Chinellato, D. D.; Collu, A.; Contreras, J. G.; de Cataldo, G.; De Pasquale, S.; Ding, Y.; Divià, R.; Dordic, O.; Eikeland, V. N.; Evdokimov, S.; Fecchio, P.; Gaardhøje, J. J.; Gagliardi, M.; Gauger, E. F.; Grelli, A.; Grigoras, C.; Grigoryan, S.; Guittiere, M.; Gunji, T.; Hassan, Q. U.; Hohlweger, B.; Honermann, J.; Iddon, J. P.; Kaplin, V.; Karasu Uysal, A.; Karatovic, D.; Karavicheva, T.; Keil, M.; Khabanova, Z.; Khatun, A.; Kileng, B.; Kim, J.; Klemenz, T.; Krizek, F.; Krüger, M.; Langoy, R.; Lavicka, R.; Lien, J.; Liu, J.; Llope, W. J.; Loncar, P.; López Torres, E.; Luhder, J. R.; Majka, R. D.; Marchisone, M.; Mazzilli, M.; Miśkowiec, D.; Nair, R.; Naru, M. U.; Nattrass, C.; Nesterov, D.; Peresunko, D.; Perez, G. M.; Pestov, Y.; Pinsky, L.; Pliquett, F.; Qiu, S.; Rath, R.; Reidt, F.; Ristea, C.; Rogochaya, E.; Rotondi, A.; Roy, A.; Ryabov, Y.; Sahoo, S.; Samsonov, V.; Schmidt, N. V.; Senyukov, S.; Sharma, M.; Siddhanta, S.; Skaali, T. B.; Stocco, D.; Szabo, A.; Thakur, S.; Tripathy, S.; Vickovic, L.; Vinogradov, A.; Vislavicius, V.; Weber, S. G.; Wessels, J. P.; Wilkinson, J.; Yano, S.; Zampolli, C.; Zhou, Z.

    The journal of high energy physics, 10/2020, Letnik: 2020, Številka: 10
    Journal Article

    A bstract The inclusive J/ ψ elliptic ( v 2 ) and triangular ( v 3 ) flow coefficients measured at forward rapidity (2 . 5 < y < 4) and the v 2 measured at midrapidity (| y | < 0 . 9) in Pb-Pb collisions at s NN = 5 . 02 TeV using the ALICE detector at the LHC are reported. The entire Pb-Pb data sample collected during Run 2 is employed, amounting to an integrated luminosity of 750 μ b − 1 at forward rapidity and 93 μ b − 1 at midrapidity. The results are obtained using the scalar product method and are reported as a function of transverse momentum p T and collision centrality. At midrapidity, the J/ ψ v 2 is in agreement with the forward rapidity measurement. The centrality averaged results indicate a positive J/ ψ v 3 with a significance of more than 5 σ at forward rapidity in the p T range 2 < p T < 5 GeV/ c . The forward rapidity v 2 , v 3 , and v 3 /v 2 results at low and intermediate p T ( p T ≲ 8 GeV/ c ) exhibit a mass hierarchy when compared to pions and D mesons, while converging into a species-independent curve at higher p T . At low and intermediate p T , the results could be interpreted in terms of a later thermalization of charm quarks compared to light quarks, while at high p T , path-length dependent effects seem to dominate. The J/ ψ v 2 measurements are further compared to a microscopic transport model calculation. Using a simplified extension of the quark scaling approach involving both light and charm quark flow components, it is shown that the D-meson v n measurements can be described based on those for charged pions and J/ ψ flow.