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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The possibility of $QQ\bar{q}\bar{q}$ heavy-light four-quark bound states hasbeen analyzed by means of the chiral SU(3) quark model, where $Q$ is the heavyquark ($c$ or $b$) and $q$ is the light quark ($u$, $d$ or $s$). We obtain abound state for the $bb\bar{n}\bar{n}$ configuration with quantum number$J^{P}=1^{+},I=0$ and for the $cc\bar{n}\bar{n}$ ($J^{P}=1^{+},I=0$)configuration which is not bound but slightly above the $D^{*}D^{*}$ threshold(n is $u$ or $d$ quark). Meanwhile, we also conclude that a weakly bound statein $bb\bar{n}\bar{n}$ system can also be found without considering the chiralquark interactions between the two light quarks, yet its binding energy isweaker than that with the chiral quark interactions.

Four-quark Bound States in Chiral SU(3) Quark Model