Puzzles in charm spectroscopy
P. Colangelo, F. De Fazio, R. Ferrandes, S. Nicotri

TL;DR
This paper reviews recent developments in charm meson spectroscopy, focusing on open and hidden charm resonances such as D_{sJ}(2860) and X(3872), highlighting their properties and significance.
Contribution
It provides a concise analysis of the current understanding of charm resonances, emphasizing the puzzles and open questions in the field.
Findings
Discussion of the properties of D_{sJ}(2860) and X(3872)
Identification of unresolved issues in charm spectroscopy
Insights into the nature of open and hidden charm states
Abstract
We briefly analyze aspects of open and hidden charm resonances, discussing in particular the mesons and X(3872).
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