Azimuthal anisotropy of jet particles in p-Pb and Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV

The ALICE collaboration
JHEP 08 (2024) 234, 2024.

Abstract (data abstract)
The azimuthal anisotropy of particles associated with jets (jet particles) at midrapidity is measured for the first time in p--Pb and Pb--Pb collisions at $\sqrt{s_{NN}}$ $=$ 5.02 TeV down to transverse momentum ($\it{p}_{\rm T}$) of 0.5 GeV/$c$ and 2 GeV/$c$, respectively, with ALICE. The second-order Fourier coefficient of the jet-particle azimuthal distribution ($v_2$) in high-multiplicity p--Pb collisions is positive, with a significance reaching 6.8$\sigma$ at low $\it{p}_{\rm T}$. Comparisons with the inclusive charged-particle $v_2$ and with AMPT calculations are discussed. The model describes qualitatively the main features of the jet-particle $v_2$ in high-multiplicity p--Pb collisions and indicates that the positive jet-particle $v_2$ is generated by parton interactions.

  • Table1_1

    Data from figure 5, violet open squares

    10.17182/hepdata.153810.v1/t1

    Inclusive charged-particle $v_{2}$ as a function of $p_{\mathrm{T}}$ in high-multiplicity (0$-$10%) p$-$Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV

  • Table1_2

    Data from figure 5, read open circles

    10.17182/hepdata.153810.v1/t2

    Jet-particle $v_{2}$ as a function of $p_{\mathrm{T}}$ in high-multiplicity (0$-$10%) p$-$Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV, the $p_{\mathrm{T}}$ of...

  • Table1_3

    Data from figure 5, blue full circles

    10.17182/hepdata.153810.v1/t3

    Jet-particle $v_{2}$ as a function of $p_{\mathrm{T}}$ in high-multiplicity (0$-$10%) p$-$Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV, the $p_{\mathrm{T}}$ of...

  • Table1_4

    Data from figure 5, green full squares

    10.17182/hepdata.153810.v1/t4

    Jet-particle $v_{2}$ as a function of $p_{\mathrm{T}}$ in high-multiplicity (0$-$10%) p$-$Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV, the $p_{\mathrm{T}}$ of...

  • Table2_1

    Data from figure 6, violet open squares

    10.17182/hepdata.153810.v1/t5

    Inclusive charged-particle $v_{2}$ as a function of $p_{\mathrm{T}}$ in 20$-$60% semi-central Pb$-$Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV

  • Table2_2

    Data from figure 6, red open circles

    10.17182/hepdata.153810.v1/t6

    Jet-particle $v_{2}$ as a function of $p_{\mathrm{T}}$ in high-multiplicity (20$-$60%) Pb$-$Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV, the $p_{\mathrm{T}}$ of...

  • Table2_3

    Data from figure 6, blue full circles

    10.17182/hepdata.153810.v1/t7

    Jet-particle $v_{2}$ as a function of $p_{\mathrm{T}}$ in high-multiplicity (20$-$60%) Pb$-$Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV, the $p_{\mathrm{T}}$ of...

  • Table2_4

    Data from figure 6, green full squares

    10.17182/hepdata.153810.v1/t8

    Jet-particle $v_{2}$ as a function of $p_{\mathrm{T}}$ in semi-central (20$-$60%) Pb$-$Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV, the $p_{\mathrm{T}}$ of...

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