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

The $ND$ and $NB$ systems with $I=0$ and $1$, $J^{P}=\frac{1}{2}^{\pm}$,$\frac{3}{2}^{\pm}$, and $\frac{5}{2}^{\pm}$ are investigated within theframework of quark delocalization color screening model. The results show thatall the positive parity states are unbound. By coupling to the $ND^{*}$channel, the state $ND$ with $I=0,~J^{P}=\frac{1}{2}^{-}$ can form a boundstate, which can be invoked to explain the observed $\Sigma(2800)$ state. Themass of the $ND^{*}$ with $I=0,~J^{P}=\frac{3}{2}^{-}$ is close to that of thereported $\Lambda_{c}(2940)^{+}$, which indicates that $\Lambda_{c}(2940)^{+}$can be explained as a $ND^{*}$ molecular state in QDCSM. Besides, the $\DeltaD^{*}$ with $I=1,~J^{P}=\frac{5}{2}^{-}$ is also a possible resonance state.The results of the bottom case of $NB$ system are similar to those of the $ND$system. Searching for these states will be a challenging subject ofexperiments.

$ND$ and $NB$ systems in quark delocalization color screening model