Transverse momentum dependence of $Ω/ϕ$ ratio in high energy collisions
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866915975828340736 |
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| author | Li, Hai-hong Song, Jun Shao, Feng-lan |
| author_facet | Li, Hai-hong Song, Jun Shao, Feng-lan |
| contents | We apply a constituent quark equal-velocity combination model to study the $p_{T}$ dependence of $Ω/ϕ$ ratio in $pp$, $p$-Pb and Pb-Pb collisions at LHC energies. We demonstrate that the relative change rate of the $Ω/ϕ$ ratio is dominated by a discrete curvature property of $p_{T}$ spectrum of strange quarks just before hadronization. Using experimental data of $ϕ$ mesons after a quark number scaling operation, we extract $p_{T}$ spectrum of strange quarks just before hadronization and study its curvature property in high and low multiplicity events in $pp$ collisions at $\sqrt{s}=$ 7, 13 TeV, $p$-Pb collisions at $\sqrt{s_{NN}}$= 5.02 TeV and Pb-Pb collisions at $\sqrt{s_{NN}}$= 2.76 TeV. We apply these curvature properties of $p_{T}$ spectra of strange quarks to explain the observed $p_{T}$ dependence of $Ω/ϕ$ ratio in those collisions. We discuss the possible origin of the change of curvature property for $p_{T}$ spectra of strange quarks just before hadronization by considering the influence of strong collective flow formed in partonic stage evolution in collisions at LHC energies. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2605_01762 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Transverse momentum dependence of $Ω/ϕ$ ratio in high energy collisions Li, Hai-hong Song, Jun Shao, Feng-lan High Energy Physics - Phenomenology We apply a constituent quark equal-velocity combination model to study the $p_{T}$ dependence of $Ω/ϕ$ ratio in $pp$, $p$-Pb and Pb-Pb collisions at LHC energies. We demonstrate that the relative change rate of the $Ω/ϕ$ ratio is dominated by a discrete curvature property of $p_{T}$ spectrum of strange quarks just before hadronization. Using experimental data of $ϕ$ mesons after a quark number scaling operation, we extract $p_{T}$ spectrum of strange quarks just before hadronization and study its curvature property in high and low multiplicity events in $pp$ collisions at $\sqrt{s}=$ 7, 13 TeV, $p$-Pb collisions at $\sqrt{s_{NN}}$= 5.02 TeV and Pb-Pb collisions at $\sqrt{s_{NN}}$= 2.76 TeV. We apply these curvature properties of $p_{T}$ spectra of strange quarks to explain the observed $p_{T}$ dependence of $Ω/ϕ$ ratio in those collisions. We discuss the possible origin of the change of curvature property for $p_{T}$ spectra of strange quarks just before hadronization by considering the influence of strong collective flow formed in partonic stage evolution in collisions at LHC energies. |
| title | Transverse momentum dependence of $Ω/ϕ$ ratio in high energy collisions |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2605.01762 |