Multiplicity-dependent inclusive J/$ψ$ production at forward rapidity in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866911269272944640 |
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| author | ALICE Collaboration |
| author_facet | ALICE Collaboration |
| contents | This paper presents a study of the inclusive forward $J/ψ$ yield as a function of forward charged-particle multiplicity in pp collisions at $\sqrt{s} =13$ TeV using data collected by the ALICE experiment at the CERN LHC. The results are presented in terms of relative $J/ψ$ yields and relative charged-particle multiplicities with respect to these quantities obtained in inelastic collisions having at least one charged particle in the pseudorapidity range $|η| < 1$. The $J/ψ$ mesons are reconstructed via their decay into $μ^+ μ^-$ pairs in the forward rapidity region ($2.5 < y < 4$). The relative multiplicity is estimated in the forward pseudorapidity range which overlaps with the $J/ψ$ rapidity region. The results show a steeper-than-linear increase of the $J/ψ$ yields versus the multiplicity. They are compared with previous measurements and theoretical model calculations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_00686 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multiplicity-dependent inclusive J/$ψ$ production at forward rapidity in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV ALICE Collaboration High Energy Physics - Experiment Nuclear Experiment This paper presents a study of the inclusive forward $J/ψ$ yield as a function of forward charged-particle multiplicity in pp collisions at $\sqrt{s} =13$ TeV using data collected by the ALICE experiment at the CERN LHC. The results are presented in terms of relative $J/ψ$ yields and relative charged-particle multiplicities with respect to these quantities obtained in inelastic collisions having at least one charged particle in the pseudorapidity range $|η| < 1$. The $J/ψ$ mesons are reconstructed via their decay into $μ^+ μ^-$ pairs in the forward rapidity region ($2.5 < y < 4$). The relative multiplicity is estimated in the forward pseudorapidity range which overlaps with the $J/ψ$ rapidity region. The results show a steeper-than-linear increase of the $J/ψ$ yields versus the multiplicity. They are compared with previous measurements and theoretical model calculations. |
| title | Multiplicity-dependent inclusive J/$ψ$ production at forward rapidity in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV |
| topic | High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2504.00686 |