Multiplicity dependence of inclusive J/ψ production at midrapidity in pp collisions at √s=13 TeV

Measurements of the inclusive J/ψ yield as a function of charged-particle pseudorapidity density dNch/dη in pp collisions at s=13 TeV with ALICE at the LHC are reported. The J/ψ meson yield is measured at midrapidity (|y|<0.9) in the dielectron channel, for events selected based on the charged-pa...

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Hauptverfasser: Acharya, Shreyasi (VerfasserIn) , Angelov, Venelin (VerfasserIn) , Arslandok, Mesut (VerfasserIn) , Danisch, Meike (VerfasserIn) , Feuillard, Victor (VerfasserIn) , Glässel, Peter (VerfasserIn) , Kim, Jiyoung (VerfasserIn) , Kim, Minjung (VerfasserIn) , Köhler, Markus Konrad (VerfasserIn) , Leardini, Lucia (VerfasserIn) , López, Jorge (VerfasserIn) , Martin, Nicole Alice (VerfasserIn) , Ohlson, Alice (VerfasserIn) , Pachmayer, Yvonne C. (VerfasserIn) , Reygers, Klaus (VerfasserIn) , Schicker, Rainer (VerfasserIn) , Schmah, Alexander (VerfasserIn) , Schmidt, Marten Ole (VerfasserIn) , Stachel, Johanna (VerfasserIn) , Windelband, Bernd (VerfasserIn) , Yüncü, Alperen (VerfasserIn)
Körperschaft: ALICE (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 3 September 2020
In: Physics letters
Year: 2020, Jahrgang: 810
ISSN:1873-2445
DOI:10.1016/j.physletb.2020.135758
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2020.135758
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S037026932030561X
Volltext
Verfasserangaben: ALICE Collaboration, S. Acharya, V. Anguelov, M. Arslandok, A. Berdnikova, C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, M.K. Köhler, L. Leardini, C.D. Martin, N.A. Martin, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M. O. Schmidt, J. Stachel, B. Windelband, A. Yuncu [und 1004 weitere]

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246 3 3 |a Multiplicity dependence of inclusive J/psi production at midrapidity in pp collisions at square root s=13 TeV 
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520 |a Measurements of the inclusive J/ψ yield as a function of charged-particle pseudorapidity density dNch/dη in pp collisions at s=13 TeV with ALICE at the LHC are reported. The J/ψ meson yield is measured at midrapidity (|y|<0.9) in the dielectron channel, for events selected based on the charged-particle multiplicity at midrapidity (|η|<1) and at forward rapidity (−3.7<η<−1.7 and 2.8<η<5.1); both observables are normalized to their corresponding averages in minimum bias events. The increase of the normalized J/ψ yield with normalized dNch/dη is significantly stronger than linear and dependent on the transverse momentum. The data are compared to theoretical predictions, which describe the observed trends well, albeit not always quantitatively. 
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