Energy dependence of ϕ(1020) production at mid-rapidity in pp collisions with ALICE at the LHC
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Hadronic resonances are unique tools to investigate the interplay of re-scattering and regeneration effects during the hadronization phase in heavy-ion collisions. Measurements in small collision systems provide a necessary baseline for heavy-ion data, help to tune pQCD inspired event generators and give insight into the search for the onset of collective effects. As the φ meson has a longer lifetime compared to other resonances, it is expected that its production would be much less affected by regeneration and re-scattering processes. We report on measurements of φ meson production in minimum bias pp collisions at different beam energies and as a function of charged particle multiplicity with the ALICE detector at the LHC. The results include the transverse momentum (pT) distributions of φ as well as the particle yield ratios. Finally, we have also studied the φ effective strangeness content by comparing our results to theoretical calculations.
CitationTripathy, Acharya S, Acosta FT, Adamová D, Adolfsson J, Aggarwal MM, et al. Energy dependence of ϕ(1020) production at mid-rapidity in pp collisions with ALICE at the LHC. Nuclear Physics A. 2019;982:180-182
Copyright 2018 Published by Elsevier B.V.