A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Measurement of beauty-strange meson production in Pb–Pb collisions at √sNN = 5.02 TeV via non-prompt Ds+ mesons (2023)
ALICE Collaboration. (2023). Measurement of beauty-strange meson production in Pb–Pb collisions at √sNN = 5.02 TeV via non-prompt Ds+ mesons. Physics Letters B, 846, Article 137561. https://doi.org/10.1016/j.physletb.2022.137561
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: 2023
Ilmestymispäivä: 19.09.2023
Volyymi: 846
Artikkelinumero: 137561
Kustantaja: Elsevier
Julkaisumaa: Alankomaat
Julkaisun kieli: englanti
DOI: https://doi.org/10.1016/j.physletb.2022.137561
Linkki tutkimusaineistoon: https://www.hepdata.net/record/ins2071181
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/90770
Julkaisu on rinnakkaistallennettu: https://arxiv.org/abs/2204.10386
Tiivistelmä
The production yields of non-prompt D+ s mesons, namely D+ s mesons from beauty-hadron decays, were measured for the first time as a function of the transverse momentum (pT) at midrapidity (|y| < 0.5) in central and semi-central Pb–Pb collisions at a centre-of-mass energy per nucleon pair √sNN = 5.02 TeV with the ALICE experiment at the LHC. The D+ s mesons and their charge conjugates were reconstructed from the hadronic decay channel D+ s → φπ+, with φ → K−K+, in the 4 < pT < 36 GeV/c and 2 < pT < 24 GeV/c intervals for the 0–10% and 30–50% centrality classes, respectively. The measured yields of non-prompt D+ s mesons are compared to those of prompt D+ s and non-prompt D0 mesons by calculating the ratios of the production yields in Pb–Pb collisions and the nuclear modification factor RAA. The ratio between the RAA of non-prompt D+ s and prompt D+ s mesons, and that between the RAA of non-prompt D+ s and non-prompt D0 mesons in central Pb–Pb collisions are found to be on average higher than unity in the 4 < pT < 12 GeV/c interval with a statistical significance of about 1.6 σ and 1.7 σ, respectively. The measured RAA ratios are compared with the predictions of theoretical models of heavy-quark transport in a hydrodynamically expanding QGP that incorporate hadronisation via quark recombination.
YSO-asiasanat: 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: 2023
Alustava JUFO-taso: 3