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arXiv · 1011.2815

Could $Y_{b}(10890)$ be the P-wave $[bq][\bar{b}\bar{q}]$ tetraquark state?

Jian-Rong Zhang·Ming-Qiu Huang
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Abstract

Assuming $Y_{b}(10890)$ as a P-wave $bq$-scalar-diquark $\bar{b}\bar{q}$-scalar-antidiquark tetraquark state, the mass of $Y_{b}(10890)$ is computed in the framework of QCD sum rule method. Technically, contributions of operators up to dimension six are included in the operator product expansion (OPE). The numerical result $10.88\pm0.13 GeV$ for $Y_{b}(10890)$ agrees well with the experimental value, which favors the P-wave $[bq][\bar{b}\bar{q}]$ tetraquark configuration for $Y_{b}(10890)$. In the same picture, the mass of $Y(4360)$ is calculated and the result $4.32\pm0.20 GeV$ is compatible with the experimental data, which supports $Y(4360)$'s P-wave $[cq][\bar{c}\bar{q}]$ structure.

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Jian-Rong Zhang, Ming-Qiu Huang. 2010-11-12. Could $Y_{b}(10890)$ be the P-wave $[bq][\bar{b}\bar{q}]$ tetraquark state?. https://doi.org/10.1007/jhep11(2010)057

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