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arXiv · 0705.0802

Two or Four: A Hint from Scalar Mesons in Radiative phi Decays ?

Deirdre Black·Masayasu Harada·Joseph Schechter
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Abstract

In this write-up, we summarize our recent analysis of radiative decays involving light scalar mesons. Our analysis using the vector meson dominance model at tree level indicates that it may be difficult to distinguish $qq\bar{q}\bar{q}$ picture and $q\bar{q}$ picture for the light scalar nonet. Our result on the process of $ϕ\to π^0 ηγ$ shows that the derivative-type $f_0 K\bar{K}$ interaction reproduces experimental data below 950 GeV well, but gives a poor fit above 950 GeV, i.e., in the energy region around the mass of $a_0(980)$, but that the discrepancy can be compensated by the effect of the $K$ loop.

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Deirdre Black, Masayasu Harada, Joseph Schechter. 2007-05-06. Two or Four: A Hint from Scalar Mesons in Radiative phi Decays ?. https://doi.org/10.1143/ptps.168.173

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