Four-quark stability
J. Vijande, A. Valcarce, J.-M. Richard, N. Barnea
TL;DR
This paper reviews recent research on four-quark systems in charm physics, highlighting their role in challenging traditional quark models and exploring complex multiquark configurations.
Contribution
It provides a comprehensive overview of recent studies on exotic and non-exotic four-quark states, including the effects of pairwise and many-body forces.
Findings
Four-quark states challenge the naive quark model.
Multiquark components are significant in charm meson spectroscopy.
Recent studies reveal complex interactions in four-quark systems.
Abstract
The physics of charm has become one of the best laboratories exposing the limitations of the naive constituent quark model and also giving hints into a more mature description of meson spectroscopy, beyond the simple quark--antiquark configurations. In this talk we review some recent studies of multiquark components in the charm sector and discuss in particular exotic and non-exotic four-quark systems, both with pairwise and many-body forces.
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