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 mixing of $S-D$ partial waves for the heavy meson pairs in the decays$\Upsilon(5S) \to [B^* \bar B+ {\rm c.c.}] \pi$ and $\Upsilon(5S) \to B^* \barB^* \pi$ is considered. It is argued that this mixing, enhanced by the heavymeson mass, is calculable as dominated by a rescattering through pion exchangeif the production of the heavy mesons is dominated by $S$-wave `molecular'resonances $Z_b(10610)$ and $Z_b(10650)$. The effect of the mixing grows withthe c.m. energy $E$ in each channel over the threshold, and may reach $10 \div20$% in the rate at the upper end of applicability of the discussed approach,$E \sim 15 $MeV. It is also argued that the mixing is likely to reach maximumat energy approximately equal to the mass gap between the thresholds.

Enhanced mixing of partial waves near threshold for heavy meson pairs and properties of $Z_b(10610)$ and $Z_b(10650)$ resonances