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Forward rapidity J/ψ production as a function of charged-particle multiplicity in pp collisions at √s = 5.02 and 13 TeV

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The production of J/ψ is measured as a function of charged-particle multiplicity at forward rapidity in proton-proton (pp) collisions at center-of-mass energies $$ \sqrt{s} $$= 5.02 and 13 TeV. The J/ψ mesons are reconstructed via their decay into dimuons in the rapidity interval (2.5 < y < 4....

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Hauptverfasser: Acharya, Shreyasi (VerfasserIn) , Angelov, Venelin (VerfasserIn) , Berdnikova, Anastasia (VerfasserIn) , Bergmann, Luisa (VerfasserIn) , Danisch, Meike (VerfasserIn) , Feuillard, Victor (VerfasserIn) , Glässel, Peter (VerfasserIn) , Kim, Jiyoung (VerfasserIn) , Kim, Minjung (VerfasserIn) , Kroesen, Martin (VerfasserIn) , Nath, Abhishek (VerfasserIn) , Pachmayer, Yvonne C. (VerfasserIn) , Reygers, Klaus (VerfasserIn) , Schicker, Rainer (VerfasserIn) , Schmah, Alexander (VerfasserIn) , Schmidt, Marten Ole (VerfasserIn) , Skorodumovs, Georgijs (VerfasserIn) , Stachel, Johanna (VerfasserIn) , Stiefelmaier, Stephan (VerfasserIn) , Völkl, Martin (VerfasserIn) , Windelband, Bernd (VerfasserIn) , Yüncü, Alperen (VerfasserIn) , Zanone, Federica (VerfasserIn)
Körperschaft: ALICE (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 06 June 2022
In: Journal of high energy physics
Year: 2022, Heft: 6, Pages: 1-33
ISSN:1029-8479
DOI:10.1007/JHEP06(2022)015
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP06(2022)015
Volltext
Verfasserangaben:The ALICE collaboration*
Beschreibung
Zusammenfassung:The production of J/ψ is measured as a function of charged-particle multiplicity at forward rapidity in proton-proton (pp) collisions at center-of-mass energies $$ \sqrt{s} $$= 5.02 and 13 TeV. The J/ψ mesons are reconstructed via their decay into dimuons in the rapidity interval (2.5 < y < 4.0), whereas the charged-particle multiplicity density (dNch/dη) is measured at midrapidity (|η| < 1). The production rate as a function of multiplicity is reported as the ratio of the yield in a given multiplicity interval to the multiplicity-integrated one. This observable shows a linear increase with charged-particle multiplicity normalized to the corresponding average value for inelastic events (dNch/dη/〈dNch/dη〉), at both the colliding energies. Measurements are compared with available ALICE results at midrapidity and theoretical model calculations. First measurement of the mean transverse momentum (〈pT〉) of J/ψ in pp collisions exhibits an increasing trend as a function of dNch/dη/〈dNch/dη〉 showing a saturation towards high charged-particle multiplicities.
Beschreibung:*The ALICE collaboration: S. Archaya, V. Anguelov, A. Berdnikova, L. Bergmann, M.C. Danisch, V.J.G. Feulliard, P. Glaessel, J. Kim, M. Kim, M. Kroesen, A. Nath, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, M.A. Völkl, B. Windelband, A. Yuncu, F. Zanone [und sehr viele weitere Personen]
Im Titel steht der Buchstabe s unter dem Wurzelsymbol
Gesehen am 22.07.2022
Beschreibung:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP06(2022)015

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