Quark structure of the ${\chi }_{\mathrm{c}}(3P)$ and $X(4274)$ resonances and their strong and radiative decays

Abstract

We calculate the masses of ${\chi }_{\mathrm{c}}(3P)$ states with threshold corrections in a coupled-channel model. The model was recently applied to the description of the properties of ${\chi }_{\mathrm{c}}(2P)$ and ${\chi }_{\mathrm{b}}(3P)$ multiplets [Phys.\ Lett.\ B {\bf 789}, 550 (2019)]. We also compute the open-charm strong decay widths of the ${\chi }_{\mathrm{c}}(3P)$ states and their radiative transitions. According to our predictions, the ${\chi }_{\mathrm{c}}(3P)$ states should be dominated by the charmonium core, but they may also show small meson-meson components. The $X(4274)$ is interpreted as a $c\bar{c}$ ${\chi }_{c1}(3P)$ state. More informations on the other members of the ${\chi }_{\mathrm{c}}(3P)$ multiplet, as well as a more rigorous analysis of the $X(4274)$'s decay modes, are needed to provide further indications on the quark structure of the previous resonance.

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Cited by in corpus (11)

• Spectrum of the Hidden-Bottom and the Hidden-Charm/Strange Exotics in the Dynamical Diquark Model
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• Where are $3P$ and higher $P-$wave states in the charmonium family?
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• $X$ structures in $B^{+}\to J/\psi \varphi K^{+}$ as one-loop and double-triangle threshold cusps
• Heavy quark spin partners of the $Y(4260)$ in coupled-channel formalism
• Interactions of the ${\chi }_{c1}(4274)$ state with light mesons
• Quark structure of the $X(4500)$, $X(4700)$ and ${\chi }_{\mathrm{c}}(4P,5P)$ states
• The ground states of hidden-charm tetraquarks and their radial excitations
• Light meson emissions of the selected charmonium-like states within compact tetraquark configurations