Meson-Meson molecules and compact four-quark states
J. Vijande, A. Valcarce
TL;DR
This paper reviews recent studies on multiquark components in charm mesons, highlighting the limitations of the naive quark model and exploring exotic and non-exotic four-quark states to improve meson spectroscopy understanding.
Contribution
It provides a comprehensive review of recent advances in understanding four-quark states and meson-meson molecules in the charm sector, emphasizing their role beyond the simple quark-antiquark model.
Findings
Identification of multiquark components in charm mesons
Evidence for exotic four-quark states
Insights into meson spectroscopy beyond the naive quark model
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.
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