Comment on "Mass and Width of the Lowest Resonance in QCD"
| dc.creator | Kleefeld, F. | |
| dc.date | 2007-04-11 | |
| dc.date.accessioned | 2026-07-07T07:56:06Z | |
| dc.date.available | 2026-07-07T07:56:06Z | |
| dc.description | I. Caprini's, G. Colangelo's, and H. Leutwyler's (CCL) article "Mass and Width of the Lowest Resonance in QCD", Phys. Rev. Lett. 96, 132001 (2006) [hep-ph/0512364], is critically reviewed. The present comment is devoted to complement a recent experimental discussion (D.V. Bugg, J. Phys. G 34, 151 (2007) [hep-ph/0608081]) of short-comings in the CCL analysis, by presenting theoretical arguments pointing at a serious flaw in the theoretical formalism used by CCL, and also at the unlikeliness of their tiny error bars in the sigma-meson mass and width. The criticism made in the comment applies analogously to the analysis on the kappa-meson mass performed in the article "The K0*(800) scalar resonance from Roy-Steiner representations of pi K scattering" published as S. Descotes-Genon and B. Moussallam, Eur. Phys. J. C 48, 553 (2006) [hep-ph/0607133]. | |
| dc.description | 2 pages, no figures | |
| dc.identifier | https://arxiv.org/abs/0704.1337 | |
| dc.identifier | http://arxiv.org/abs/0704.1337 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/127187 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Comment on "Mass and Width of the Lowest Resonance in QCD" | |
| dc.type | text |