Investigations show a breakdown of elliptic flow scaling in high-multiplicity p-Pb collisions, suggesting implications for particle interactions.
We investigate the production and elliptic flow of the f₀(980) in high-multiplicity p-Pb collisions at √sNN=5.02 TeV using a hadronic coalescence model with the K and K phase-space distributions provided by the Hydro-Coal-Frag hybrid model. Our results, which agree with the ALICE and CMS measurements, support the K K molecular interpretation of the f₀(980) structure and show, however, a breakdown of the simple number-of-constituent (NC) scaling of its elliptic flow. The latter is in contrast to the deuteron elliptic flow, which exhibits a significantly better NC scaling when the same coalescence width parameter is used.
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Wang et al. (2025) studied this question.
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