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

The existence of nucleon-antinucleon quasi-bound state is indicated in twodecay modes of the J/psi meson studied by BES. We discuss an explanation in afairly traditional Paris-potential model of the nucleon-antinucleoninteractions. A broad, S-wave and a narrow P-wave quasi-bound states arepredicted by this model. Some existing experimental evidence and possibleverifications in the future are indicated.

Search for baryonium and the physics at FAIR