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

In this work, we study the flavor-changing neutral-current process$B_{c}\to{D}_{s}^{*}(\to{D}_{s}\pi)\ell^{+}\ell^{-}$ ($\ell$= $e$, $\mu$,$\tau$). The relevant weak transition form factors are obtained by using thecovariant light-front quark model, in which, the main inputs, i.e., the mesonwave functions of $B_{c}$ and $D_{s}^{*}$, are adopted as the numerical wavefunctions from the solution of the Schr\"{o}dinger equation with the modifiedGodfrey-Isgur model. With the obtained form factors, we further investigate therelevant branching fractions and their ratios, and some angular observables,i.e., the forward-backward asymmetry $A_{FB}$, the polarization fractions$F_{L(T)}$, and the $CP$-averaged angular coefficients $S_{i}$ and the $CP$asymmetry coefficients $A_{i}$. We also present our results of the cleanangular observables $P_{1,2,3}$ and $P^{\prime}_{4,5,6,8}$, which can reducethe uncertainties from the form factors. Our results show that thecorresponding branching fractions of the electron or muon channels can reach upto $10^{-8}$. With more data being accumulated in the LHCb experiment, ourresults are helpful for exploring this process, and deepen our understanding ofthe physics around the $b\to{s}\ell^{+}\ell^{-}$ process.

Angular distribution of the FCNC process $B_{c}\to{D}_{s}^{*}(\to{D}_{s}\pi)\ell^{+}\ell^{-}$