Speaker
Dr
George Rupp
(CeFEMA/IST)
Description
Five decades of work on the light scalar-meson nonet composed of $f_0(500)$, $f_0(980)$, $K_0^\star(800)$, and $a_0(980)$, as well as on other scalar mesons, will be briefly reviewed. The different phenomenological descriptions include tetraquark bound states, pure meson-meson models, unitarised effective chiral approaches, unitarised quark models, and lattice-QCD simulations. Also, the charmed-strange scalar meson $D_{s0}^\star(2317)$ is shown to be an excellent laboratory for studying the scalar-meson dynamics. Very recent lattice results are presented that confirm the dynamical quark-antiquark/meson-meson picture successfully modelled by us long ago.
Authors
Dr
George Rupp
(CeFEMA/IST)
Prof.
Eef Van Beveren
(Department of Physics, University of Coimbra)
