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Analysis of the mass and width of the X*(3860) with QCD sum rules

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Abstract.

In this article, we tentatively assign the \(X^{\ast}(3860)\) to be the \(C\gamma_{5}\otimes \gamma_{5}C\)-type scalar tetraquark state and study its mass and width with the QCD sum rules; special attention is paid to calculating the hadronic coupling constants \(G_{X\eta_{c}\pi}\) and \(G_{XDD}\) concerning the tetraquark state. We obtain the values \(M_{X}=3.86 \pm 0.09\) GeV and \( \Gamma_{X}= 202\pm 146\) MeV, which are consistent with the experimental data. The numerical result supports assigning the \(X^{\ast}(3860)\) to be the \( C\gamma_{5}\otimes \gamma_{5}C\)-type scalar tetraquark state.

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Authors and Affiliations

  1. Department of Physics, North China Electric Power University, 071003, Baoding, China

    Zhi-Gang Wang

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  1. Zhi-Gang Wang
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Correspondence to Zhi-Gang Wang.

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Communicated by S. Hands

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Wang, ZG. Analysis of the mass and width of the X*(3860) with QCD sum rules. Eur. Phys. J. A 53, 192 (2017). https://doi.org/10.1140/epja/i2017-12390-6

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  • DOI: https://doi.org/10.1140/epja/i2017-12390-6

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