Glueball Molecules
ORAL
Abstract
Experimental searches for pure glueball states have proven challenging and so far yielded no results. This is believed to occur because glueballs mix with the ordinary qq-bar states with the same quantum numbers. We will discuss an alternative mechanism, the formation of the glueball-meson molecular states. We will argue that the wave functions of already observed excited meson states may contain a significant part due to such molecular states. We discuss the phenomenology of glueball molecules and comment on a possible charmless component of the XYZ states.
*This research was supported in part by the U.S. Department of Energy under contract DE- SC0007983 and by the Excellence Cluster ORIGINS, which is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy - EXC-2094 - 390783311. It was also supported by the Visiting Scholars Award Program of the Universities Research Association.
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Publication: arXiv:2204.11269 [hep-ph]
Presenters
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Alexey A Petrov
- Wayne State University