Multiplicity dependence of f$_0$(980) production in pp collisions at $\sqrt{s} = 13$ TeV
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866912910891024384 |
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| author | ALICE Collaboration |
| author_facet | ALICE Collaboration |
| contents | The dependence of $\mathrm{f}_{0}$(980) production on the final-state charged-particle multiplicity is reported for proton-proton (pp) collisions at the centre-of-mass energy, $\sqrt{s}=13$ TeV. The production of $\mathrm{f}_{0}$(980) is measured with the ALICE detector via the $\mathrm{f}_0 (980) \rightarrow π^{+}π^{-}$ decay channel in a midrapidity region of $|y|<0.5$. The evolution of the integrated yields and mean transverse momentum of f$_{0}$(980) as a function of charged-particle multiplicity measured in pp at $\sqrt{s}=13$ TeV follows the trends observed in pp at $\sqrt{s}=5.02$ TeV and in proton-lead (p-Pb) collisions at $\sqrt{s_{\rm{NN}}}=5.02$ TeV. Particle yield ratios of $\mathrm{f}_{0}$(980) to $π^{\pm}$ and $\mathrm{K}^{*}$(892)$^{0}$ are found to decrease with increasing charged-particle multiplicity. These particle ratios are compared with calculations from the canonical statistical thermal model as a function of charged-particle multiplicity. The thermal model calculations provide a better description of the decreasing trend of particle ratios when no strange or antistrange quark composition for f$_{0}$(980) is assumed, which suggests that the data do not support significant hidden strangeness in the f$_{0}$(980). |
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arxiv_https___arxiv_org_abs_2507_19347 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multiplicity dependence of f$_0$(980) production in pp collisions at $\sqrt{s} = 13$ TeV ALICE Collaboration Nuclear Experiment High Energy Physics - Experiment The dependence of $\mathrm{f}_{0}$(980) production on the final-state charged-particle multiplicity is reported for proton-proton (pp) collisions at the centre-of-mass energy, $\sqrt{s}=13$ TeV. The production of $\mathrm{f}_{0}$(980) is measured with the ALICE detector via the $\mathrm{f}_0 (980) \rightarrow π^{+}π^{-}$ decay channel in a midrapidity region of $|y|<0.5$. The evolution of the integrated yields and mean transverse momentum of f$_{0}$(980) as a function of charged-particle multiplicity measured in pp at $\sqrt{s}=13$ TeV follows the trends observed in pp at $\sqrt{s}=5.02$ TeV and in proton-lead (p-Pb) collisions at $\sqrt{s_{\rm{NN}}}=5.02$ TeV. Particle yield ratios of $\mathrm{f}_{0}$(980) to $π^{\pm}$ and $\mathrm{K}^{*}$(892)$^{0}$ are found to decrease with increasing charged-particle multiplicity. These particle ratios are compared with calculations from the canonical statistical thermal model as a function of charged-particle multiplicity. The thermal model calculations provide a better description of the decreasing trend of particle ratios when no strange or antistrange quark composition for f$_{0}$(980) is assumed, which suggests that the data do not support significant hidden strangeness in the f$_{0}$(980). |
| title | Multiplicity dependence of f$_0$(980) production in pp collisions at $\sqrt{s} = 13$ TeV |
| topic | Nuclear Experiment High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2507.19347 |