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Multiplicity dependence of charged particle, ϕ meson, and multi-strange particle productions in p \(+\) p collisions at \(\sqrt{s}\) = 200 GeV from PYTHIA simulation

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Abstract

We report the multiplicity dependence of charged particle production for the \(\pi ^{\pm }\), \(K^{\pm }\), p, \(\overline{p}\), and \(\phi \) mesons at \(|y| < 1.0\) in \(\mathrm{p}+\mathrm{p}\) collisions at \(\sqrt{s}\) = 200 GeV from a \(\text {PYTHIA}\) simulation. The impact of multiple parton interactions and gluon contributions is studied and found to be a possible source of the splitting of the particle yields as a function of pT with respect to the multiplicity. No obvious particle species dependence of the splitting is observed. The multiplicity dependence of the ratios \(K^-/\pi ^-\), \(K^+/\pi ^+\), \(\overline{p}/\pi ^-\), \(p/\pi ^+\), and K 0s at mid-rapidity in \(\mathrm{p}+\mathrm{p}\) collisions is found to follow a tendency similar to that in \(\mathrm{Au}+\mathrm{Au}\) collisions at \(\sqrt{{s}_{\text {NN}}}\) = 200 GeV at the Relativistic Heavy Ion Collider, indicating similar underlying initial production mechanisms despite the differences in the initial colliding systems.

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Authors and Affiliations

  1. University of Science and Technology of China, Hefei, 230026, China

    Sheng-Hui Zhang, Long Zhou, Yi-Fei Zhang, Ming-Wei Zhang, Cheng Li, Ming Shao, Yong-Jie Sun & Ze-Bo Tang

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  1. Sheng-Hui Zhang
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  2. Long Zhou
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Correspondence to Yi-Fei Zhang.

Additional information

This work was supported by the Major State Basic Research Development Program in China (No. 2014CB845400), the National Natural Science Foundation of China (No. 11375184), the Youth Innovation Promotion Association Fund of CAS (No. CX2030040079), the Ministry of Science and Technology (MoST) of China (No. 2016YFE0104800), and the Science and Technological Fund of Anhui Province for Outstanding Youth (No. 1808085J02).

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Zhang, SH., Zhou, L., Zhang, YF. et al. Multiplicity dependence of charged particle, ϕ meson, and multi-strange particle productions in p \(+\) p collisions at \(\sqrt{s}\) = 200 GeV from PYTHIA simulation. NUCL SCI TECH 29, 136 (2018). https://doi.org/10.1007/s41365-018-0469-y

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  • DOI: https://doi.org/10.1007/s41365-018-0469-y

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