The radiative decays $φ\toγa_0/f_0$ in the molecular model for the scalar mesons

Details The radiative decays $φ\toγa_0/f_0$ in the molecular model for the scalar mesons The radiative decays $φ\toγa_0/f_0$ in the molecular model for the scalar mesons

2004-12-22

arxiv.org/abs/hep-ph/0412340v2

Eur.Phys.J.A24:437-443,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages; extended discussion on finite width effects; version as published in Eur. Phys. J

Scientific paper

10.1140/epja/i2005-10008-4

We investigate the radiative decays of the $\phi$ meson to the scalar mesons $a_0(980)$ and $f_0(980)$. We demonstrate that, contrary to earlier claims, these decays should be of the same order of magnitude for a molecular state and for a compact state and, therefore, the available experimental information is consistent with both, a molecular as well as a compact structure of the scalars. Thus, the radiative decays of the $\phi$ meson into scalars establish a sizable $K\bar K$ component of the scalar mesons, but do not allow to discriminate between molecules and compact states.

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