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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report the first observation of the $\Xi_{c}(2930)^0$ charmed-strangebaryon with a significance greater than 5$\sigma$. The $\Xi_{c}(2930)^0$ isfound in its decay to $K^- \Lambda_{c}^+$ in $B^{-} \to K^{-} \Lambda_{c}^{+}\bar{\Lambda}_{c}^{-}$ decays. The measured mass and width are $[2928.9 \pm3.0(\rm stat.)^{+0.9}_{-12.0}(\rm syst.)]$ MeV/$c^{2}$ and $[19.5 \pm 8.4(\rmstat.) ^{+5.9}_{-7.9}(\rm syst.)]$ MeV, respectively, and the product branchingfraction is ${\cal B}(B^{-} \to \Xi_{c}(2930)^0 \bar{\Lambda}_{c}^{-}) {\calB}(\Xi_{c}(2930)^0 \to K^- \Lambda_{c}^{+})=[1.73 \pm 0.45(\rm stat.) \pm0.21(\rm syst.)]\times 10^{-4}$. We also measure ${\cal B}(B^{-} \to K^{-}\Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}) = [4.80 \pm 0.43(\rm stat.) \pm 0.60(\rmsyst.)] \times 10^{-4}$ with improved precision, and search for thecharmonium-like state $Y(4660)$ and its spin partner, $Y_{\eta}$, in the$\Lambda_{c}^{+}\bar{\Lambda}_{c}^{-}$ invariant mass spectrum. No clearsignals of the $Y(4660)$ nor its spin partner are observed and the 90\%credibility level (C.L.) upper limits on their production rates are determined.These measurements are obtained from a sample of $(772\pm11)\times 10^{6}B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance by the Belle detectorat the KEKB asymmetric energy electron-positron collider.

Observation of $\Xi_{c}(2930)^0$ and updated measurement of $B^{-} \to K^{-} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}$ at Belle