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

I. Caprini's, G. Colangelo's, and H. Leutwyler's (CCL) article "Mass andWidth of the Lowest Resonance in QCD", Phys. Rev. Lett. 96, 132001 (2006)[hep-ph/0512364], is critically reviewed. The present comment is devoted tocomplement a recent experimental discussion (D.V. Bugg, J. Phys. G 34, 151(2007) [hep-ph/0608081]) of short-comings in the CCL analysis, by presentingtheoretical arguments pointing at a serious flaw in the theoretical formalismused by CCL, and also at the unlikeliness of their tiny error bars in thesigma-meson mass and width. The criticism made in the comment appliesanalogously to the analysis on the kappa-meson mass performed in the article"The K0*(800) scalar resonance from Roy-Steiner representations of pi Kscattering" published as S. Descotes-Genon and B. Moussallam, Eur. Phys. J. C48, 553 (2006) [hep-ph/0607133].

Comment on "Mass and Width of the Lowest Resonance in QCD"