J/ψ elliptic and triangular flow in Pb-Pb collisions at √sNN=5.02 TeV

• Verfasst von: Acharya, Shreyasi [VerfasserIn]
• Verfasst von: Angelov, Venelin [VerfasserIn]
• Verfasst von: Arslandok, Mesut [VerfasserIn]
• Verfasst von: Danisch, Meike [VerfasserIn]
• Verfasst von: Feuillard, Victor [VerfasserIn]
• Verfasst von: Glässel, Peter [VerfasserIn]
• Verfasst von: Kim, Jiyoung [VerfasserIn]
• Verfasst von: Kim, Minjung [VerfasserIn]
• Verfasst von: Köhler, Markus Konrad [VerfasserIn]
• Verfasst von: Leardini, Lucia [VerfasserIn]
• Verfasst von: López, Jorge [VerfasserIn]
• Verfasst von: Martin, Nicole Alice [VerfasserIn]
• Verfasst von: Pachmayer, Yvonne C. [VerfasserIn]
• Verfasst von: Reygers, Klaus [VerfasserIn]
• Verfasst von: Schicker, Rainer [VerfasserIn]
• Verfasst von: Schmah, Alexander [VerfasserIn]
• Verfasst von: Schmidt, Marten Ole [VerfasserIn]
• Verfasst von: Stachel, Johanna [VerfasserIn]
• Verfasst von: Windelband, Bernd [VerfasserIn]
• Verfasst von: Stiefelmaier, Stephan [VerfasserIn]
• Verfasst von: Yüncü, Alperen [VerfasserIn]
• Titel: J/ψ elliptic and triangular flow in Pb-Pb collisions at √sNN=5.02 TeV
• Körperschaft: ALICE (Körperschaft) [VerfasserIn]
• Verf.angabe: the ALICE collaboration
• E-Jahr: 2020
• Jahr: 22 October 2020
• Umfang: 31 S.
• Fussnoten: The ALICE collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, M.K. Köhler, L. Leardini, J. Lopez, N.A. Martin, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, J. Stachel, B. Windelband, S. Stiefelmaier, A. Yüncü [und viele weitere] ; Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt ; Gesehen am 07.12.2020
• Titel Quelle: Enthalten in: Journal of high energy physics
• Ort Quelle: Berlin : Springer, 1997
• Jahr Quelle: 2020
• Band/Heft Quelle: (2020,10) Artikel-Nummer 141, 31 Seiten
• ISSN Quelle: 1029-8479
• DOI: doi:10.1007/JHEP10(2020)141
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1742148719

Abstract

The inclusive J/ψ elliptic (v2) and triangular (v3) flow coefficients measured at forward rapidity (2.5 < y < 4) and the v2 measured at midrapidity (|y| < 0.9) in Pb-Pb collisions at sNN$$ \sqrt{s_{\mathrm{NN}}} $$= 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 μb−1 at forward rapidity and 93 μb−1 at midrapidity. The results are obtained using the scalar product method and are reported as a function of transverse momentum pT and collision centrality. At midrapidity, the J/ψ v2 is in agreement with the forward rapidity measurement. The centrality averaged results indicate a positive J/ψ v3 with a significance of more than 5σ at forward rapidity in the pT range 2 < pT < 5 GeV/c. The forward rapidity v2, v3, and v3/v2 results at low and intermediate pT (pT ≲ 8 GeV/c) exhibit a mass hierarchy when compared to pions and D mesons, while converging into a species-independent curve at higher pT. At low and intermediate pT, the results could be interpreted in terms of a later thermalization of charm quarks compared to light quarks, while at high pT, path-length dependent effects seem to dominate. The J/ψ v2 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 vn measurements can be described based on those for charged pions and J/ψ flow.