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 process $e^{+}e^{-}\rightarrow D_{s}^{\ast+}D_{s}^{\ast-}$ is studiedwith a semi-inclusive method using data samples at center-of-mass energies fromthreshold to 4.95 GeV collected with the BESIII detector operating at theBeijing Electron Positron Collider. The Born cross sections of the process aremeasured for the first time with high precision in this energy region. Tworesonance structures are observed in the energy-dependent cross sections around4.2 and 4.4 GeV. By fitting the cross sections with a coherent sum of threeBreit-Wigner amplitudes and one phase-space amplitude, the two significantstructures are assigned masses of (4186.5$\pm$9.0$\pm$30) MeV/$c^{2}$ and(4414.5$\pm$3.2$\pm$6.0) MeV/$c^{2}$, widths of (55$\pm$17$\pm$53) MeV and(122.6$\pm$7.0$\pm$8.2) MeV, where the first errors are statistical and thesecond ones are systematic. The inclusion of a third Breit-Wigner amplitude isnecessary to describe a structure around 4.79 GeV.

Precise measurement of the $e^{+}e^{-}\rightarrow D_{s}^{\ast+}D_{s}^{\ast-}$ cross sections at center-of-mass energies from threshold to 4.95 GeV