Investigating the elliptic anisotropy of identified particles in p–Pb collisions with a multi-phase transport model

Tang, Si-Yu; Zheng, Liang; Zhang, Xiao-Ming; Wan, Ren-Zhuo

doi:10.1007/s41365-024-01387-4

NUCL SCI TECH

2024

DOI: 10.1007/s41365-024-01387-4

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Investigating the elliptic anisotropy of identified particles in p–Pb collisions with a multi-phase transport model

Si-Yu Tang,

Liang Zheng,

Xiao-Ming Zhang

et al.

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2024

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Cited by 4 publications

References 58 publications

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

Acharya,

Adamová,

Adler

et al. 2024

J. High Energ. Phys.

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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 $$ \sqrt{{\textrm{s}}_{\textrm{NN}}} $$ s NN = 5.02 TeV down to transverse momentum (p T) of 0.5 GeV/c and 2 GeV/c, respectively, with ALICE. The results obtained in p-Pb collisions are based on a novel three-particle correlation technique. The azimuthal anisotropy coefficient v 2 in high-multiplicity p-Pb collisions is positive, with a significance reaching 6.8σ at low p T, and its magnitude is smaller than in semicentral Pb-Pb collisions. In contrast to the measurements in Pb-Pb collisions, the v 2 coefficient is also found independent of p T within uncertainties. Comparisons with the inclusive charged-particle v 2 and with AMPT calculations are discussed. The predictions suggest that parton interactions play an important role in generating a non-zero jet-particle v 2 in p-Pb collisions, even though they overestimate the reported measurement. These observations shed new insights on the understanding of the origin of the collective behaviour of jet particles in small systems such as p-Pb collisions, and provide significant stringent new constraints to models.

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

Acharya,

Adamová,

Adler

et al. 2024

J. High Energ. Phys.

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The medium-temperature dependence of jet transport coefficient in high-energy nucleus–nucleus collisions

Xie,

Han,

Wang

et al. 2024

NUCL SCI TECH

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Elliptic anisotropy of open-charm hadrons from parton scatterings in p -Pb collisions at energies available at the CERN Large Hadron Collider

Tang,

Lu,

Zhang

et al. 2024

Phys. Rev. C

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The elliptic azimuthal anisotropy coefficient (v2) of open-charm hadrons at midrapidity (|η<1|) was studied in p-Pb collisions at sNN=8.16 TeV using a multiphase transport () model including an additional charm quark–antiquark pair production trigger. The model provides a simultaneous description of the measured pT spectrum and v2 of the D0 meson, as well as the v2 of light flavor meson Ks0. We found that the D0 and Ks0 v2 are both significantly affected by different parton scatterings among charm and light quarks. In addition, the predictions for the v2 of other charm hadrons including D+, Ds+, and Λc+ in p-Pb collisions are given for the first time. The v2 of open-charm hadrons reasonably follows the number-of-constituent-quark (NCQ) scaling up to 2.5 GeV, strongly indicating the importance of partonic degrees of freedom for the collectivity of heavy flavors in high-multiplicity p-Pb collisions. These findings may hint at the formation of deconfined matter in small collision systems, and provide referential value for future measurements of azimuthal anisotropy at energies available at the CERN Large Hadron Collider. Published by the American Physical Society 2024

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Investigating the elliptic anisotropy of identified particles in p–Pb collisions with a multi-phase transport model

Cited by 4 publications

References 58 publications

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

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

The medium-temperature dependence of jet transport coefficient in high-energy nucleus–nucleus collisions

Elliptic anisotropy of open-charm hadrons from parton scatterings in p -Pb collisions at energies available at the CERN Large Hadron Collider

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