A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Measurements of inclusive J/ψ production at midrapidity and forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV (2024)
ALICE Collaboration. (2024). Measurements of inclusive J/ψ production at midrapidity and forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV. Physics Letters B, 849, Article 138451. https://doi.org/10.1016/j.physletb.2024.138451
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: ALICE Collaboration
Lehti tai sarja: Physics Letters B
ISSN: 0370-2693
eISSN: 1873-2445
Julkaisuvuosi: 2024
Ilmestymispäivä: 12.01.2024
Volyymi: 849
Artikkelinumero: 138451
Kustantaja: Elsevier
Julkaisumaa: Alankomaat
Julkaisun kieli: englanti
DOI: https://doi.org/10.1016/j.physletb.2024.138451
Linkki tutkimusaineistoon: https://www.hepdata.net/record/ins2648616
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/94658
Julkaisu on rinnakkaistallennettu: https://arxiv.org/abs/2303.13361
Tiivistelmä
The measurements of the inclusive J/ψ yield at midrapidity (|y|<0.9) and forward rapidity (2.5 < 4) in Pb−Pb collisions at√sNN=5.02 TeV with the ALICE detector at the LHC are reported. The inclusive J/ψ production yields and nuclear modification factors, RAA, are measured as a function of the collision centrality, J/ψ transverse momentum (pT), and rapidity. The J/ψ average transverse momentum and squared transverse momentum (⟨pT⟩ and ⟨p2T⟩) are evaluated as a function of the centrality at midrapidity. Compared to the previous ALICE publications, here the entire Pb−Pb collisions dataset collected during the LHC Run 2 is used, which improves the precision of the measurements and extends the pT coverage. The pT-integrated RAA shows a hint of an increasing trend towards unity from semicentral to central collisions at midrapidity, while it is flat at forward rapidity. The pT-differential RAA shows a strong suppression at high pT with less suppression at low pT where it reaches a larger value at midrapidity compared to forward rapidity. The ratio of the pT-integrated yields of J/ψ to those of D0 mesons is reported for the first time for the central and semicentral event classes at midrapidity. Model calculations implementing charmonium production via the coalescence of charm quarks and antiquarks during the fireball evolution (transport models) or in a statistical approach with thermal weights are in good agreement with the data at low pT. At higher pT, the data are well described by transport models and a model based on energy loss in the strongly-interacting medium produced in nuclear collisions at the LHC.
YSO-asiasanat: hiukkasfysiikka; ydinfysiikka
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- The strong interaction at the frontier of knowledge: fundamental research and applications- STRONG- 2020
- Lappi, Tuomas
- Euroopan komissio
- Kvarkkiaineen tutkimuksen huippuyksikkö
- Räsänen, Sami
- Suomen Akatemia
- Kvarkkiaineen tutkimuksen huippuyksikö
- Kim, Dong
- Suomen Akatemia
OKM-raportointi: Kyllä
Raportointivuosi: 2024
Alustava JUFO-taso: 3