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PreprintCC BY 4.0arXiv

Investigating forward-backward asymmetry in D-meson production and anisotropic flow in p-Pb collisions at the LHC

  • Siyu Tang
  • Chao Zhang
  • Liang Zheng
  • Renzhuo Wan
  • Zi-Wei Lin
  • Guo-Liang Ma
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Abstract

We investigate the forward--backward asymmetry in the production and elliptic flow of prompt D0 mesons in proton--lead (p--Pb) collisions at√(sNN)=8.16 TeV using the heavy-flavor improved string-melting version of the AMPT model. The model calculations provide a simultaneous description of nuclear modification factor RpPb and v2 in forward and backward rapidities. We find that the observed asymmetry arises from the interplay of initial-state cold nuclear matter effects and final-state partonic interactions, with the competition between coalescence and fragmentation playing a critical role in shaping the transverse momentum and rapidity dependence of both observables. This work suggests that a partonic medium is formed in high-multiplicity p-Pb collisions at LHC energies.

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Cite

BibTeXRIS
BibTeX
@misc{tang2026investigating,
  title = {{Investigating forward-backward asymmetry in D-meson production and anisotropic flow in p-Pb collisions at the LHC}},
  author = {Siyu Tang and Chao Zhang and Liang Zheng and Renzhuo Wan and Zi-Wei Lin and Guo-Liang Ma},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2606.28928},
  eprint = {2606.28928},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.28928},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Investigating forward-backward asymmetry in D-meson production and anisotropic flow in p-Pb collisions at the LHC
AU  - Siyu Tang
AU  - Chao Zhang
AU  - Liang Zheng
AU  - Renzhuo Wan
AU  - Zi-Wei Lin
AU  - Guo-Liang Ma
PY  - 2026
DA  - 2026/10/18
PB  - arXiv
DO  - 10.48550/arxiv.2606.28928
UR  - https://arxiv.org/abs/2606.28928
AB  - We investigate the forward--backward asymmetry in the production and elliptic flow of prompt D0 mesons in proton--lead (p--Pb) collisions at√(s_NN)=8.16 TeV using the heavy-flavor improved string-melting version of the AMPT model. The model calculations provide a simultaneous description of nuclear modification factor R_pPb and v_2 in forward and backward rapidities. We find that the observed asymmetry arises from the interplay of initial-state cold nuclear matter effects and final-state partonic interactions, with the competition between coalescence and fragmentation playing a critical role in shaping the transverse momentum and rapidity dependence of both observables. This work suggests that a partonic medium is formed in high-multiplicity p-Pb collisions at LHC energies.
ER  -