November 9, 2025Open Access

Violation of the elliptic flow scaling of f₀ (980) in p-Pb collisions at the LHC

Key Points

Breakdown of elliptic flow scaling observed in high-multiplicity p-Pb collisions, contradicting prior expectations.
Elliptic flow analysis reported indicates significant disparities in scaling between f_0(980) and deuteron flows.
Utilization of a hadronic coalescence model and phase-space distributions to study interactions thoroughly.
Findings support the molecular interpretation of f_0(980), suggesting nuanced dynamics in particle production.

Abstract

We investigate the production and elliptic flow of the f₀ (980) in high-multiplicity p-Pb collisions at s₍₍=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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Cite This Study

Wang et al. (Wed,) studied this question.

synapsesocial.com/papers/690fdcdaf60c54d04ea38252 https://doi.org/https://doi.org/10.48550/arxiv.2511.03637

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