Figures from paper submitted to Journal of High Energy Physics
Abstract:
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.
JHEP 07 (2025) 238
e-Print: arXiv:2504.00686 | PDF | inSPIRE
