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

There exists a significant deviation between the most recent Lattice QCDsimulation and experimental measurement by Belle for$\Xi_{c}^{0}\to\Xi^{-}\ell^{+}\nu_{\ell}$. In this work, we investigate the$\Xi_{c}\to\Xi$ form factors in QCD sum rules. To this end, the two-pointcorrelation functions of $\Xi_{c}$ and $\Xi$, and the three-point correlationfunctions of $\Xi_{c}\to\Xi$ are calculated. At the QCD level, contributionsfrom up to dimension-6 four-quark operators are considered, and the leadingorder results of the Wilson coefficients are obtained. For the form factors,relatively stable Borel windows can be found. Our form factors are comparablewith those of Lattice QCD, except for $f_{\perp}$. The obtained form factorsare then used to predict the branching ratios of $\Xi_{c}\to\Xi\ell^{+}\nu_{\ell}$, and our predictions are consistent with the most recentdata of ALICE and Belle, and those of Lattice QCD within error. Given that thebranching ratios only contain limited information, we suggest theexperimentalists directly measure the form factors of $\Xi_{c}\to\Xi$.

Semi-leptonic form factors of $\Xi_{c}\to\Xi$ in QCD sum rules