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arXiv · 0712.1814

Is eta' partially made of gluonium?

Rafel Escribano
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Abstract

A phenomenological analysis of radiative $V\to Pγ$ and $P\to Vγ$ decays is performed in order to determine the gluonic content of the $η^\prime$ wave function. Our result shows that there is no evidence for such a gluonium contribution, $Z_{η^\prime}^2=0.04\pm 0.09$. In terms of a mixing angle description this corresponds to $ϕ_P=(41.4\pm 1.3)^\circ$ and $|ϕ_{η^\prime G}|=(12\pm 13)^\circ$.

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Rafel Escribano. 2007-12-11. Is eta' partially made of gluonium?. https://arxiv.org/abs/0712.1814

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