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 present an assessment of the standard model expectations for the branchingratio of the isotopic spin and G-parity violating decay tau --> eta' pi nu_tau.The estimate is based on a vector and scalar meson dominance parametrization ofthe relevant form factors, that explicitly accounts for pi^0-eta-eta' mixing.The numerical results obtained in this framework indicate a branching ratio oneorder of magnitude (or more) below the current experimental limit, and suggestthe possibility of evidencing some novel interaction in high statistics studiesof this decay.

On the branching ratio of the "second class" tau --> eta' pi nu_tau decay