Systematics of qq̄ states, scalar mesons and glueball

Abstract

Systematics of qq states, scalar mesons and glueball V.V. Anisovich * St.Petersburg Nuclear Physics Institute AbstractBasing on the latest results of the PNPI (Gatchina) and QM&W College (London) groups, I discuss systematics of the IJ P C qq states in terms of trajectories on the (n, M 2 ) plane, where n is the radial quantum number and M is its mass. In the scalar sector, which is the most interesting because of the presence of extra states with respect to the qq systematics,

Partial-wave analysis of J/ψ→K+K−π0Ablikim1, Ачасов2, Adlarson3 et al. 2019Phys. Rev. D13140View full textAdd to dashboardCite

“…The mass of the former state is determined with a central value around 100 MeV=c 2 lower than that reported by the LASS Collaboration [29]. This lower value is in better agreement with the expectation from the linear Regge trajectory of radial excitations with the standard slope [38]. As for the known decays through Kπ resonances, we determine the parameters, decay ratios, and branching fractions for the K Ã ð892Þ AE and K Ã 2 ð1430Þ AE with improved precision compared to previous measurements.…”

Radiative and Hadronic Decays of Vector Mesons in the Gauge Model of Quark-Meson Interactions

“…Moreover, the value of m G makes it possible to interpret the meson σ 0 = f 0 (600) as the (mostly) glueball state [52,53]. It does not contradict to some known ideas on the gluon nature of σ− meson (see [50] and references therein for the review of scalar meson properties).…”

The possible members of the $5^1S_0$ meson nonet

“…A series of the papers of Anisovich [14][15][16][17][18] indicate that with a good accuracy, the light q q meson states with different radial excitations fit to the following quasi-linear (n, M 2 n )trajectories…”