Contribution of the vector meson to the ϒ(nS)→d¯*(2380)+X decay channel

@article{L2019ContributionOT,
  title={Contribution of the vector meson to the 
ϒ(nS)→d¯*(2380)+X
 decay channel},
  author={Chao-Yi L{\"u} and Ping Wang and Yubing Dong and Peng-nian Shen and Z. Y. Zhang},
  journal={Physical Review D},
  year={2019}
}
$d^\ast(2380)$ was observed by WASA-at-COSY collaborations in the nuclear reaction recently. Its particularly narrow width may indicate the new QCD-allowed hadronic structure. To further confirm the existence of this peculiar particle in a totally different kind of reaction, we study the opportunity for searching $\bar{d}^\ast$ in the $\Upsilon(nS)$ (with n=1, 2, 3) decay. As a phenomenological study, our framework is based on SU(3) chiral quark model. By virtue of the unitarity of $S$-matrix… 
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