Number of constituent quark scaling of elliptic flows in high multiplicity p-Pb collisions at $\sqrt{s_{NN}}$=5.02TeV

Zhao, Wenbin; Ko, Che Ming; Liu, Yu-Xin; Qin, Guang-You; Song, Huichao

doi:10.1016/j.nuclphysa.2020.121876

Number of constituent quark scaling of elliptic flows in high multiplicity p-Pb collisions at $$\sqrt{s_{NN}}$$=5.02TeV

Journal Article · Fri Dec 10 00:00:00 EST 2021 · Nuclear Physics. A

DOI:https://doi.org/10.1016/j.nuclphysa.2020.121876· OSTI ID:1841740

Zhao, Wenbin ^[1]; Ko, Che Ming ^[2]; Liu, Yu-Xin ^[1]; Qin, Guang-You ^[3]; Song, Huichao ^[1]

Peking Univ., Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
Texas A & M Univ., College Station, TX (United States)
Central China Normal University, Wuhan (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

In this work, we briefly summarize our recent study on the number of constituent quark (NCQ) scaling of hadron elliptic flows in high multiplicity p-Pb collisions at $$\sqrt{s_{NN}}$$ = 5.02 TeV. With the inclusion of hadron production via the quark coalescence model at intermediate p_T, the viscous hydrodynamics at low p_T, and jet fragmentation at high p_T, our Hydro – Coal – Frag model provides a nice description of the p_T-spectra and differential elliptic flow v₂(p_T) of pions, kaons and protons over the pT range from 0 to 6 GeV. Our results demonstrate that including the quark coalescence is essential for reproducing the observed approximate NCQ scaling of hadron v₂ at intermediate p_T in experiments, indicating strongly the existence of partonic degrees of freedom and the formation of quark-gluon plasma in high multiplicity p-Pb collisions at the LHC.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: China Scholarship Council (CSC); National Natural Science Foundation of China (NSFC); USDOE; Welch Foundation

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1841740

Alternate ID(s):: OSTI ID: 1760962

Journal Information:: Nuclear Physics. A, Journal Name: Nuclear Physics. A Vol. 1005; ISSN 0375-9474

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Number of constituent quark scaling of elliptic flows in high multiplicity p-Pb collisions at $$\sqrt{s_{NN}}$$=5.02TeV

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