Glueballs, a fulfilled promise of QCD?

Eberhard Klempt

Glueballs, a fulfilled promise of QCD?

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arxiv 2211.12901 v2 pith:CYMZGIO3 submitted 2022-11-23 hep-ph

Eberhard Klempt This is my paper · ORCID

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keywords glueballcontributionscalaranalysisarxivchromdynamicscoupled-channeldata

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abstract

This is a contribution to the review "50 Years of Quantum Chromdynamics" edited by F. Gross and E. Klempt [arXiv:2212.11107], to be published in EPJC. The contribution remembers the early searches and explains how to find a glueball, based on its properties. The results of a coupled-channel analysis are presented that provides evidence for the scalar glueball and first hints for the tensor glueball. Data on radiative decays of $\psi(2S)$ and $\Upsilon(1S)$ show scalar intensity that is likely due to glueball production.

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Spinless glueballs in generalized linear sigma model
hep-ph 2025-08 reject novelty 5.0 of 10

A generalized linear sigma model with two chiral nonets and two pseudoscalar glueballs is fitted to meson masses, identifying eta(2225)/X(2370) as the dominant glue state after a parameter filter.

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