A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Multiplicity and event-scale dependent flow and jet fragmentation in pp collisions at √s = 13 TeV and in p–Pb collisions at √sNN = 5.02 TeV (2024)

ALICE Collaboration. (2024). Multiplicity and event-scale dependent flow and jet fragmentation in pp collisions at √s = 13 TeV and in p–Pb collisions at √sNN = 5.02 TeV. Journal of High Energy Physics, 2024(3), Article 92. https://doi.org/10.1007/JHEP03(2024)092

JYU-tekijät tai -toimittajat

Hassan, Hadi
Huhta, Laura
Kim, Dong
Molander, Andreas
Mordasini, Cindy
Rytkönen, Heidi
Räsänen, Sami
Saarimäki, Oskari
Trzaska, Wladyslaw
Virta, Maxim
Önnerstad, Anna

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: 15.03.2024

Volyymi: 2024

Lehden numero: 3

Artikkelinumero: 92

Kustantaja: Springer Science and Business Media LLC

Julkaisumaa: Saksa

Julkaisun kieli: englanti

DOI: https://doi.org/10.1007/JHEP03(2024)092

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/94630

Julkaisu on rinnakkaistallennettu: https://arxiv.org/abs/2308.16591

Tiivistelmä

Long- and short-range correlations for pairs of charged particles are studied via two-particle angular correlations in pp collisions at √s=13 TeV and p−Pb collisions at √sNN=5.02 TeV. The correlation functions are measured as a function of relative azimuthal angle Δφ and pseudorapidity separation Δη for pairs of primary charged particles within the pseudorapidity interval |η|<0.9 and the transverse-momentum interval 1<4 GeV/c. Flow coefficients are extracted for the long-range correlations (1.6<|Δη|<1.8) in various high-multiplicity event classes using the low-multiplicity template fit method. The method is used to subtract the enhanced yield of away-side jet fragments in high-multiplicity events. These results show decreasing flow signals toward lower multiplicity events. Furthermore, the flow coefficients for events with hard probes, such as jets or leading particles, do not exhibit any significant changes compared to those obtained from high-multiplicity events without any specific event selection criteria. The results are compared with hydrodynamic-model calculations, and it is found that a better understanding of the initial conditions is necessary to describe the results, particularly for low-multiplicity events.

YSO-asiasanat: hiukkasfysiikka

Liittyvät organisaatiot

Hankkeet, joissa julkaisu on tehty

OKM-raportointi: Kyllä

Raportointivuosi: 2024

Alustava JUFO-taso: 3