A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
J/ψ elliptic and triangular flow in Pb-Pb collisions at √sNN = 5.02 TeV (2020)


ALICE collaboration (2020). J/ψ elliptic and triangular flow in Pb-Pb collisions at √sNN = 5.02 TeV. Journal of High Energy Physics, 2020 (10), 141. DOI: 10.1007/JHEP10(2020)141


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: 2020

Volyymi: 2020

Lehden numero: 10

Artikkelinumero: 141

Kustantaja: Springer

Julkaisumaa: Saksa

Julkaisun kieli: englanti

DOI: https://doi.org/10.1007/JHEP10(2020)141

Avoin saatavuus: Open access -julkaisukanavassa ilmestynyt julkaisu

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/72333

Rinnakkaistallenteen verkko-osoite (pre-print): https://arxiv.org/abs/2005.14518


Tiivistelmä

The inclusive J/ψ elliptic (v2) and triangular (v3) flow coefficients measured at forward rapidity (2.5 < y < 4) and the v2 measured at midrapidity (|y| < 0.9) in Pb-Pb collisions at sNN−−−√sNN = 5.02 TeV using the ALICE detector at the LHC are reported. The entire Pb-Pb data sample collected during Run 2 is employed, amounting to an integrated luminosity of 750 μb−1 at forward rapidity and 93 μb−1 at midrapidity. The results are obtained using the scalar product method and are reported as a function of transverse momentum pT and collision centrality. At midrapidity, the J/ψ v2 is in agreement with the forward rapidity measurement. The centrality averaged results indicate a positive J/ψ v3 with a significance of more than 5σ at forward rapidity in the pT range 2 < pT < 5 GeV/c. The forward rapidity v2, v3, and v3/v2 results at low and intermediate pT (pT ≲ 8 GeV/c) exhibit a mass hierarchy when compared to pions and D mesons, while converging into a species-independent curve at higher pT. At low and intermediate pT, the results could be interpreted in terms of a later thermalization of charm quarks compared to light quarks, while at high pT, path-length dependent effects seem to dominate. The J/ψ v2 measurements are further compared to a microscopic transport model calculation. Using a simplified extension of the quark scaling approach involving both light and charm quark flow components, it is shown that the D-meson vn measurements can be described based on those for charged pions and J/ψ flow


YSO-asiasanat: hiukkasfysiikka

Vapaat asiasanat: Hadron-Hadron scattering (experiments)


Liittyvät organisaatiot

JYU-yksiköt:


OKM-raportointi: Kyllä

Alustava JUFO-taso: 2


Viimeisin päivitys 2021-22-02 klo 12:58