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arXiv · 2308.06768

$X(3960)$, $X_0(4140)$, and other compact $cs\bar{c}\bar{s}$ states

Shi-Yuan Li·Yan-Rui Liu·Zi-Long Man·Zong-Guo Si·Jing Wu
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Abstract

We study the spectrum and rearrangement decays of S-wave $cs\bar{c}\bar{s}$ tetraquark states in a simplified quark model. The masses and widths are estimated by assuming that the $X(4140)$ is the lower $1^{++}$ $cs\bar{c}\bar{s}$ tetraquark. Comparing our results with experimental measurements, we find that the recently observed $X(3960)$ by LHCb can be assigned as the lowest $0^{++}$ $cs\bar{c}\bar{s}$ tetraquark state and the $X_0(4140)$ could be the second lowest $0^{++}$ $cs\bar{c}\bar{s}$ tetraquark. Predictions of ratios between partial widths for the involved tetraquarks are given. We call for searches for more $cs\bar{c}\bar{s}$ tetraquarks with $J^{PC}=1^{+-}$, $0^{++}$, and $2^{++}$.

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Shi-Yuan Li, Yan-Rui Liu, Zi-Long Man, Zong-Guo Si, Jing Wu. 2023-08-13. $X(3960)$, $X_0(4140)$, and other compact $cs\bar{c}\bar{s}$ states. https://doi.org/10.1088/1674-1137%2Fad34c4

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