Four-Charm-Quark Matter from the CMS Collaboration as a Witness of the Development of High-Precision Hadron Spectroscopy

Xiang Liu

Four-Charm-Quark Matter from the CMS Collaboration as a Witness of the Development of High-Precision Hadron Spectroscopy

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arxiv 2407.13476 v1 pith:5R7YXOWI submitted 2024-07-18 hep-ph hep-ex

Xiang Liu This is my paper · ORCID

classification hep-phhep-ex

keywords mattercollaborationfour-charm-quarkconfirmcrucialdevelopmentexoticexploring

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abstract

Recent CMS observations in the di-$J/\psi$ invariant mass spectrum reveal new structures at 6638 MeV ($X(6600)$)) and 7134 MeV, and confirm the $X(6900)$ at 6847 MeV. These findings provide crucial insights into four-charm-quark matter. The CMS Collaboration's result serves as a testament to the progress in exploring exotic hadronic matter.

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Symmetry Analysis of Compact Tetraquark States and Implications for the Fully Charmed Candidates $X(6600)$, $X(6900)$, and $X(7100)$
hep-ph 2026-07 unverdicted novelty 5.0 of 10

Symmetry analysis of compact tetraquarks shows low-energy states favor J^P=2+ and places X(6600), X(6900), X(7100) among the lower levels of the fully charmed spectrum.

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