English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

$d^\ast(2380)$ was observed by WASA-at-COSY collaborations in the nuclearreaction recently. Its particularly narrow width may indicate the newQCD-allowed hadronic structure. To further confirm the existence of thispeculiar particle in a totally different kind of reaction, we study theopportunity 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) chiralquark model. By virtue of the unitarity of $S$-matrix and crossing symmetry, westudy the imaginary part of the forward scattering amplitudes between$\Upsilon(nS)$ and $d^\ast$. The scattering process is mainly governed by thequark-meson interaction. We examine both the pseudoscalar and vector mesoncontribution in the intermediate state. Hopefully, our results show that it'squite possible to find $\bar{d}^\ast$ in this decay mode in the future.

The opportunity to find $\bar{d}^\ast(2380)$ in the $\Upsilon(nS)$ decay