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The radiative decay ϕ → γππ in a coupled-channel model and the structure of f0(980)

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Abstract

A coupled-channel model is used to study the nature of the scalar mesons produced in the decay ϕ → γππ. The K\(\bar K\) molecular picture of f0(980) is found to be in a good agreement with the recent experimental data from SND and CMD-2. The structure of the light scalar mesons is elucidated by investigating the S-matrix poles and the q\(\bar q\) spectral density.

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Authors and Affiliations

  1. Paul Scherrer Institute, 5232, Villigen PSI, Switzerland

    V. E. Markushin

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  1. V. E. Markushin
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Correspondence to V. E. Markushin.

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Communicated by A.A. Anisovich

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Markushin, V.E. The radiative decay ϕ → γππ in a coupled-channel model and the structure of f0(980). Eur. Phys. J. A 8, 389–399 (2000). https://doi.org/10.1007/s100500070092

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