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 review our recent analysis of pion-pion scattering data in terms of Royequations and Forward Dispersion Relations, and present some preliminaryresults in terms of a new set of once-subtracted coupled equations for partialwaves. The first analysis consists of independent fits to the differentpion-pion channels that satisfies rather well the dispersive representation. Inthe second analysis we constrain the fit with the dispersion relations. Thelatter provides a very precise and model independent description of data usingjust analyticity, causality and crossing.

Precise analysis of pion-pion scattering data from Roy equations and forward dispersion relations