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

As has been confirmed meanwhile by lattice-QCD calculations (see e.g.hep-lat/0702023), the confinement spectrum of non-exotic quark-antiquarksystems has its ground state for scalar mesons well above 1 GeV in theResonance Spectrum Expansion (RSE). For instance, in the S-wave Kaon-pion RSEamplitude, a broad resonance was predicted slightly above 1.4 GeV[hep-ex/0106077], which is confirmed by experiment as the K*0(1430). However, acomplete nonet of light scalar mesons was predicted (Zeit.Phys.C30,615[http://www-spires.slac.stanford.edu/spires/find/hep?key=1573454]) as well,when a model strongly related to the RSE and initially developed to describethe heavy quarkonia resonance spectra (Phys.Rev.D21,772[http://www-spires.slac.stanford.edu/spires/find/hep?key=363162]) was appliedin the light-quark sector. Thus, it was found that the light scalar-meson nonetconstitutes part of the ordinary meson spectrum, albeit represented by"extraordinary" [hep-ph/0701038] poles [hep-ex/0106077].  Similar resonances and bound states appear in the charmed sector[hep-ph/0305035], and are predicted in the B-meson spectrum [hep-ph/0312078,hep-ph/0406242].  A recent work [hep-ph/0703286] confirmed the presence of light scalar-mesonpoles in the RSE amplitude for S-wave and P-wave pion-pion and Kaon-pioncontributions to three-body decay processes measured by the BES, E791 and FOCUScollaborations.

How we discovered the nonet of light scalar mesons