A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Prompt and non-prompt J/ψ production at midrapidity in Pb–Pb collisions at √sNN = 5.02 TeV (2024)


ALICE Collaboration. (2024). Prompt and non-prompt J/ψ production at midrapidity in Pb–Pb collisions at √sNN = 5.02 TeV. Journal of High Energy Physics, 2024(2), Article 66. https://doi.org/10.1007/JHEP02(2024)066


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: ALICE Collaboration

Lehti tai sarja: Journal of High Energy Physics

ISSN: 1126-6708

eISSN: 1029-8479

Julkaisuvuosi: 2024

Ilmestymispäivä: 09.02.2024

Volyymi: 2024

Lehden numero: 2

Artikkelinumero: 66

Kustantaja: Springer Science and Business Media LLC

Julkaisumaa: Saksa

Julkaisun kieli: englanti

DOI: https://doi.org/10.1007/JHEP02(2024)066

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/94838

Julkaisu on rinnakkaistallennettu: https://arxiv.org/abs/2308.16125


Tiivistelmä

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 √sNN = 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<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 c¯¯ 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.


YSO-asiasanat: hiukkasfysiikka; ydinfysiikka; kvarkki-gluoniplasma


Liittyvät organisaatiot

JYU-yksiköt:


Hankkeet, joissa julkaisu on tehty


OKM-raportointi: Kyllä

Raportointivuosi: 2024

Alustava JUFO-taso: 3


Viimeisin päivitys 2024-15-05 klo 11:31