Brief report on `Radiative $φ$ decays with derivative interactions'

Details Brief report on `Radiative $φ$ decays with derivative interactions' Brief report on `Radiative $φ$ decays with derivative interactions'

2008-12-17

arxiv.org/abs/0812.3357v1

PoS Confinement8:163,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Based on a presentation held at Confinement8, Quark Confinement and the Hadron Spectrum, Mainz (Germany), 1-6 September 2008.

Scientific paper

We study the line shapes of radiative $\phi$-decays with a direct coupling of the $\phi$ meson to the $f_{0}(980)$ and $a_{0}(980)$ scalar mesons. The latter couple via derivative interactions to $\pi_0 \pi_0$ and $\pi_0 \eta$, respectively. Although the kaon-loop mechanism is usually regarded as the dominant mechanism in radiative $\phi$ decays, here we test a different possibility: we set the kaon-loop to zero and we fit the theoretical curves to the data by retaining only the direct coupling. Remarkably, satisfactory fits can be achieved, mainly due to the effects of derivative interactions of scalar with pseudoscalar mesons.

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