Quark-gluonium content of the scalar-isoscalar states f_0(980), f_0(1300), f_0(1500), f_0(1750), f_0(1420 ^{+150}_{- 70}) from hadronic decays
| dc.creator | Anisovich, V. V. | |
| dc.creator | Nikonov, V. A. | |
| dc.creator | Sarantsev, A. V. | |
| dc.date | 2001-08-23 | |
| dc.date.accessioned | 2026-07-07T10:32:54Z | |
| dc.date.available | 2026-07-07T10:32:54Z | |
| dc.description | On the basis of the decay couplings f_0 -> ππ, K\bar K, ηη, ηη', which had been found before, in the study of analytical (IJ^{PC}=00^{++})-amplitude in the mass range 450-1900 MeV, we analyse the quark-gluonium content of resonances f_0(980), f_0(1300), f_0(1500), f_0(1750) and the broad state f_0(1420 ^{+ 150}_{-70}). The K-matrix technique used in the analysis makes it possible to evaluate the quark-gluonium content both for the states with switched-off decay channels (bare states, f^{bare}_0) and the real resonances. We observe significant change of the quark-gluonium composition in the evolution from bare states to real resonances, that is due to the mixing of states in the transitions f_0(m_1)-> real mesons-> f_0(m_2) responsible for the decay processes as well. For the f_0(980), the analysis confirmed the dominance of q\bar q component thus proving the n\bar n/s\bar s composition found in the study of the radiative decays. For the mesons f_0(1300), f_0(1500) and f_0(1750), the hadronic decays do not allow one to determine uniquely the n\bar n, s\bar s and gluonium components providing relative pecentage only. The analysis shows that the broad state f_0(1420 ^{+ 150}_{-70}) can mix with the flavour singlet q\bar q component only, that is consistent with gluonium origin of the broad resonance. | |
| dc.description | 20 pages, LaTeX, 10 PostScript figures, epsfig.sty | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0108188 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0108188 | |
| dc.identifier | Phys.Atom.Nucl.66:741-754,2003; Yad.Fiz.66:772-785,2003 | |
| dc.identifier | doi:10.1134/1.1575574 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178917 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Quark-gluonium content of the scalar-isoscalar states f_0(980), f_0(1300), f_0(1500), f_0(1750), f_0(1420 ^{+150}_{- 70}) from hadronic decays | |
| dc.type | text |