A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Modification of charged-particle jets in event-shape engineered Pb–Pb collisions at √sNN = 5.02 TeV (2024)
ALICE Collaboration. (2024). Modification of charged-particle jets in event-shape engineered Pb–Pb collisions at √sNN = 5.02 TeV. Physics Letters B, 851, Article 138584. https://doi.org/10.1016/j.physletb.2024.138584
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: 18.03.2024
Volyymi: 851
Artikkelinumero: 138584
Kustantaja: Elsevier
Julkaisumaa: Alankomaat
Julkaisun kieli: englanti
DOI: https://doi.org/10.1016/j.physletb.2024.138584
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/94916
Julkaisu on rinnakkaistallennettu: https://arxiv.org/abs/2307.14097
Tiivistelmä
Charged-particle jet yields have been measured in semicentral Pb−Pb collisions at center-of-mass energy per nucleon-nucleon collision √sNN=5.02 TeV with the ALICE detector at the LHC. These yields are reported as a function of the jet transverse momentum, and further classified by their angle with respect to the event plane and the event shape, characterized by ellipticity, in an effort to study the path-length dependence of jet quenching. Jets were reconstructed at midrapidity from charged-particle tracks using the anti-kT algorithm with resolution parameters R= 0.2 and 0.4, with event-plane angle and event-shape values determined using information from forward scintillating detectors. The results presented in this letter show that, in semicentral Pb−Pb collisions, there is no significant difference between jet yields in predominantly isotropic and elliptical events. However, out-of-plane jets are observed to be more suppressed than in-plane jets. Further, this relative suppression is greater for low transverse momentum (< 50 GeV/c) R= 0.2 jets produced in elliptical events, with out-of-plane to in-plane jet-yield ratios varying up to 5.2σ between different event-shape classes. These results agree with previous studies indicating that jets experience azimuthally anisotropic suppression when traversing the QGP medium, and can provide additional constraints on the path-length dependence of jet energy loss.
YSO-asiasanat: hiukkasfysiikka; ydinfysiikka; kvarkki-gluoniplasma
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