A possible assignment for the ground scalar meson nonet
نویسنده
چکیده
Based on the main assumption that the a0(980) and D ∗ sJ (2317) belong to the 1 3P0 qq̄ multiplet, in the framework of Regge phenomenology and meson-meson mixing, it is suggested that the a0(980), K ∗ 0 (1052), f0(1099) and f0(530) constitute the ground scalar meson nonet, and that the f0(1099) is composed mostly of ss̄ while the f0(530) is mainly uū+dd̄. It is supposed that these states would likely correspond to the observed scalar states a0(980), κ(900), f0(980) and f0(600)/σ, respectively. The agreement between the present findings and those given by other different approaches is satisfactory.
منابع مشابه
Towards Resolution of the Scalar Meson Nonet Enigma
By the application of a linear mass spectrum to a composite system of both the pseudoscalar and scalar meson nonets, we find three relations for the masses of the scalar states which suggest the qq̄ assignment for the scalar meson nonet: a0(1320), K ∗ 0 (1430), f0(1500) and f ′ 0(980).
متن کاملSchwinger’s Nonet Mass Formula Revisited
We prove the validity of Schwinger’s quartic nonet mass formula for a general nonet structure with the isoscalar singlet mass being shifted from its “ideal” value. We apply this formula to the problem of the correct qq̄ assignment for the scalar meson nonet. The results favor scalar isoscalar singlet and isoscalar octet masses in the vicinity of 1 GeV and 1.45 GeV, respectively. We explain the f...
متن کاملOn the dominance of non-exotic meson-meson scattering by s-channel qq̄ confinement states and the classification of the scalar mesons
Non-exotic scalar-meson resonances in S-wave meson-meson scattering are studied in the light of a unitarised Schrödinger model. The resulting poles in the scattering matrices, by analytical continuation into the complex-energy plane, are grouped into nonets of isoscalar, isodoublet, and isotriplet resonances. All singularities can be related to quark-antiquark confinement states, the light-quar...
متن کاملTowards Resolution of the Scalar Meson Nonet Enigma II.Gell-Mann–Okubo Revisited
The new SU(3) nonet mass formula 2M2(ss̄)+3M2(nn̄, I = 1) = 4M2(sn̄)+ M2(nn̄, I = 0) (n = u, d), obtained in our previous paper by using Regge phenomenology, is rederived for the pseudoscalar and scalar mesons in the Nambu–Jona-Lasinio model with instanton-induced interaction and applied to the problem of the correct qq̄ assignment for the scalar meson nonet. The results strongly favor the masses of...
متن کاملMass Spectrum of a Meson Nonet is Linear
It is argued that the mass spectrum of a meson nonet is linear, consistent with the standard Gell-Mann–Okubo mass formula and leading to an extra Gell-Mann–Okubo mass relation for the masses of the isoscalar states. This relation is shown to hold with an accuracy of up to ∼3% for all well-established nonets. It also suggests a new qq̄ assignment for the scalar meson nonet. Bitnet: [email protected]...
متن کامل