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The J^PC = 0^++ scalar meson nonet and glueball of lowest mass

Peter Minkowski·Wolfgang Ochs
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Abstract

The evidence for the low mass J^{PC}=0^{++} states is reconsidered. We suggest classifying the isoscalars f_0(980) and f_0(1500) as members of the 0^{++} nonet, with a mixing rather similar to that of the pseudoscalars η' and η. The broad state called f_0(400-1200) or `sigma'' and the state f_0(1370) are considered as different signals from a single broad resonance, which we take to be the lowest-lying 0^{++} glueball. The main arguments in favor of these hypotheses are presented and compared with theoretical expectations.

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Peter Minkowski, Wolfgang Ochs. 1999-05-05. The J^PC = 0^++ scalar meson nonet and glueball of lowest mass. https://arxiv.org/abs/hep-ph/9905250

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