Two-photon production of f₀ and a₀ resonances as hadronic molecules composed of two vector mesons

2024/04/07 by Li-Ke Yang, Zhengli Wang, Yang, Li-Ke +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2404.04826

openalex publication_date 2024/04/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

Ascribed as ρρ and K^* K^* molecular states, respectively, iso-scalar f₀(1500) and f₀(1710) states are expected to have iso-vector partners, potentially identified as a₀(1450) and a₀(1710). The predicted dominant decay modes for these two a₀ resonances are a₀(1450) → ωππ and a₀(1710) → ωππ, ϕππ. We estimate cross sections for two-photon production of these four resonances within the hadronic molecular picture, and demonstrate that SuperKEKB's luminosity is sufficient for their observation and more precise parameter measurements.

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