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Prompt and non-prompt J/ψ production at midrapidity in Pb-Pb collisions at √s NN = 5.02 TeV

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The transverse momentum (pT) and centrality dependence of the nuclear modification factor RAA of prompt and non-prompt J/ψ, the latter originating from the weak decays of beauty hadrons, have been measured by the ALICE collaboration in Pb-Pb collisions at √s NN = 5.02 TeV. The measurements are carri...

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Hauptverfasser: Acharya, Shreyasi (Verfasst von) , Angelov, Venelin (Verfasst von) , Berdnikova, Anastasia (Verfasst von) , Bergmann, Luisa (Verfasst von) , Crkovská, Jana (Verfasst von) , Danisch, Meike (Verfasst von) , Feuillard, Victor (Verfasst von) , Fokin, Ilya D. (Verfasst von) , Glässel, Peter (Verfasst von) , Grünwald, Nadine (Verfasst von) , Kroesen, Martin (Verfasst von) , Nath, Abhishek (Verfasst von) , Pachmayer, Yvonne C. (Verfasst von) , Reygers, Klaus (Verfasst von) , Schicker, Rainer (Verfasst von) , Schlepper, Felix (Verfasst von) , Seo, Jinjoo (Verfasst von) , Skorodumovs, Georgijs (Verfasst von) , Stachel, Johanna (Verfasst von) , Stiefelmaier, Stephan (Verfasst von) , Veen, Casper Arie van (Verfasst von) , Völkl, Martin (Verfasst von) , Windelband, Bernd (Verfasst von) , Yüncü, Alperen (Verfasst von) , Zanone, Federica (Verfasst von)
Körperschaft: ALICE (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 09 February 2024
In: Journal of high energy physics
Year: 2024, Heft: 2, Pages: 1-40
ISSN:1029-8479
DOI:10.1007/JHEP02(2024)066
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP02(2024)066
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Verfasserangaben:The ALICE collaboration*
Beschreibung
Zusammenfassung:The transverse momentum (pT) and centrality dependence of the nuclear modification factor RAA of prompt and non-prompt J/ψ, the latter originating from the weak decays of beauty hadrons, have been measured by the ALICE collaboration in Pb-Pb collisions at √s NN = 5.02 TeV. The measurements are carried out through the e+e− decay channel at midrapidity (|y| < 0.9) in the transverse momentum region 1.5 < pT < 10 GeV/c. Both prompt and non-prompt J/ψ measurements indicate a significant suppression for pT > 5 GeV/c, which becomes stronger with increasing collision centrality. The results are consistent with similar LHC measurements in the overlapping pT intervals, and cover the kinematic region down to pT = 1.5 GeV/c at midrapidity, not accessible by other LHC experiments. The suppression of prompt J/ψ in central and semicentral collisions exhibits a decreasing trend towards lower transverse momentum, described within uncertainties by models implementing J/ψ production from recombination of c and quarks produced independently in different partonic scatterings. At high transverse momentum, transport models including quarkonium dissociation are able to describe the suppression for prompt J/ψ. For non-prompt J/ψ, the suppression predicted by models including both collisional and radiative processes for the computation of the beauty-quark energy loss inside the quark-gluon plasma is consistent with measurements within uncertainties.
Beschreibung:Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol
*The ALICE collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, J. Crkovská, M.C. Danisch, V.J.G. Feuillard, I. Fokin, P. Glässel, N.A. Grunwald, M. Kroesen, A. Nath, Y. Pachmayer, K. Reygers, R. Schicker, F. Schlepper, J.J. Seo, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, C.A. van Veen, M.A. Völkl, B. Windelband, A. Yuncu, F. Zanone [und sehr viele weitere Personen]
Gesehen am 07.08.2024
Beschreibung:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP02(2024)066

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