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arXiv · 1708.00142

Triply heavy $QQ\bar Q\bar q$ tetraquark states

Jin-Feng Jiang·Wei Chen·Shi-Lin Zhu
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Abstract

Within the framework of QCD sum rules, we have investigated the tetraquark states with three heavy quarks. We systematically construct the interpolating currents for the possible $cc\bar{c}\bar{q}$, $cc\bar{b}\bar{q}$, $bc\bar{b}\bar{q}$, $bb\bar{b}\bar{q}$ tetraquark states with quantum numbers $J^{P}=0^{+}$ and $J^{P}=1^{+}$. Using these interpolating currents, we have calculated the two-point correlation functions and extracted the mass spectra for the above tetraquark states. We also discuss the decay patterns of these tetraquarks, and notice that the $cc\bar{c}\bar{q}$, $cc\bar{b}\bar{q}$, $bc\bar{b}\bar{q}$ may decay quickly with a narrow width due to their mass spectra. The $bb\bar{b}\bar{q}$ tetraquarks are expected to be very narrow resonances since their OZI-allowed decay modes are kinematically forbidden. These states may be searched for in the final states with a $B$ meson plus a light meson or photon.

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Jin-Feng Jiang, Wei Chen, Shi-Lin Zhu. 2017-08-01. Triply heavy $QQ\bar Q\bar q$ tetraquark states. https://doi.org/10.1103/physrevd.96.094022

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