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

Autori
Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Karatović, D. ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Vicković, Linda ; ... ; Zurlo, N.

Kolaboracija
ALICE Collaboration

Izvornik
Physics letters. B (0370-2693) 810 (2020); 135758, 14

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
J/ψ meson ; J/ψ yield ; J/psi ; charged-particle multiplicity ; pp collision

Sažetak
Measurements of the inclusive J/ψ yield as a function of charged- particle pseudorapidity density dN_{; ; ; ch}; ; ; /dη in pp collisions at √sNN = 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 dN_{; ; ; ch}; ; ; /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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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