K-matrix analysis of the K-pi S-wave in the mass region 900-2100 Mev and nonet classification of scalar qqbar-states
| dc.creator | Anisovich, A. V. | |
| dc.creator | Sarantsev, A. V. | |
| dc.date | 1997-05-23 | |
| dc.date.accessioned | 2026-07-07T10:33:31Z | |
| dc.date.available | 2026-07-07T10:33:31Z | |
| dc.description | A K-matrix re-analysis of the K-pi S-wave is performed in the mass region 900-2100 MeV, and solutions which describe the data well are found. The solution with two resonances in the (IJ^P=1/2 0^+)-wave has poles at (1415 pm 25)- i(165 pm 25) MeV and (1820 pm 40) -i(125 pm 50) MeV, close to the previous result of D. Aston et al., Nucl.Phys., B296 (1988) 493. The corresponding bare states, which are the subjects of a qqbar classification, are: K_0^{bare}(1220^{+50}_{-60}) and K_0^{bare}(1885^{+50}_{-80}). Within the restored bare states, a construction of the 1^3P_0 qqbar and 2^3P_0 qqbar nonets is completed. The three resonance solutions are analysed as well, the corresponding bare states are found, and the qqbar-nonet classification is suggested. In all variants of our qqbar-classification, the resonances a_0(980) and f_0(980) (or their bare counterparts) are non-exotic, and an extra scalar/isoscalar state exists in the mass region 1300-1700 MeV, being a good candidate for the lightest scalar glueball. | |
| dc.description | 18 pages, 3 Postscript figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9705401 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9705401 | |
| dc.identifier | Phys.Lett.B413:137-146,1997 | |
| dc.identifier | doi:10.1016/S0370-2693(97)01089-7 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179139 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | K-matrix analysis of the K-pi S-wave in the mass region 900-2100 Mev and nonet classification of scalar qqbar-states | |
| dc.type | text |