Speaker
Dr
Feng-Kun Guo
(Universität Bonn)
Description
The leading order interaction between a Goldstone boson and a matter field is universally dominated by the Weinberg-Tomozawa term. Based on this observation, we predict a rich spectrum of bound states of a kaon and a heavy meson. We argue that if the life time of an excited heavy meson is significantly longer than the range of forces, then the finite width of that state can be neglected in a first approximation. Then, the $D_{s0}^*(2317)$, $D_{s1}(2460)$, $D_{sJ}(2860)$ and $D_{sJ}(3040)$ are generated as $DK$, $D^*K$, $D_1(2420)K$ and $D^*(2600)K$ bound states, respectively. Except for the remarkable agreement with the measured masses, the decay patterns of the $D_{sJ}(2860)$ and $D_{sJ}(3040)$ can also be understood. Two more $D_{sJ}$ states, and kaonic bound states with the bottom mesons as well as the doubly charmed baryon are also predicted.
Primary author
Dr
Feng-Kun Guo
(Universität Bonn)
Co-author
Prof.
Ulf-G. Meißner
(Universität Bonn)
