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Strangeness production in pPb collisions at sNN=5.02 TeV in the PACIAE model

Wei Lei1, Qiang Wang1, An-Ke Lei1,2,*, Zhi-Lei She3, Jia-Xin Gao1, Dai-Mei Zhou1,†, Yu-Liang Yan4,‡, Hua Zheng5, Wen-Chao Zhang5 et al.

Ben-Hao Sa1,4,§

  • *Contact author: ankelei@mails.ccnu.edu.cn
  • †Contact author: zhoudm@mail.ccnu.edu.cn
  • ‡Contact author: yuliang86@yeah.net
  • §Contact author: sabhliuym35@qq.com
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Phys. Rev. C 113, 024902 – Published 5 February, 2026

DOI: https://doi.org/10.1103/8124-hg7h

Abstract

We present a study of the single- and multistrange particle productions in pPb collisions at sNN=5.02 TeV using the PACIAE 4.0 model. The effects of color reconnection (CR), rope hadronization (RH), as well as partonic and hadronic rescatterings (PRS and HRS) on their productions are investigated. There are two kinds of CR considered: the multiparton-interactions-based CR (MPI-CR) and the quantum-chromodynamics-based CR (QCD-CR). The four mechanisms studied have little effect on kaon production. The QCD-CR scheme incorporating the junction topology gives an enhanced baryon production, but it is still not enough to describe the data of integrated yields of strange baryons. The combination of QCD-CR and the RH scheme together with flavor ropes (FR) and string shoving (SS) provides a good description for the data of strange baryon production. For the heavier Ξ and Ω baryons, an improved QCD−CR+FR scheme with stronger tension is required, whereas the QCD−CR+FR+SS scheme adequately describes Λ production. PRS has a weak effect, but HRS exerts a promoting effect on the production of multistrange baryons (Ξ and Ω).

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Phys. Rev. C 113, 024902– Published 5 February, 2026
  • Received 17 September 2025
  • Revised 1 December 2025
  • Accepted 10 December 2025
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