PT Journal
AU Bruschini, R
   Gonzalez, P
TI Diabatic description of charmoniumlike mesons. II. Mass corrections and strong decay widths
SO Physical Review D
JI Phys. Rev. D
PY 2021
BP 074009
EP 13pp
VL 103
IS 7
DI 10.1103/PhysRevD.103.074009
LA English
AB From a diabatic bound state approach to J(PC) = 1(--) and (0,1,2)(++) charmoniumlike resonances below 4.1 GeV, formulated in terms of c (c) over bar and closed meson-meson channels, we calculate mass shifts and widths due to open meson-meson channels. This calculation does not involve any new free parameter, so comparison of our predictions with existing data provides a direct test of our approach. Further mass corrections are also estimated and good agreement with the measured masses comes out. As for the calculated widths, overall reasonable, they point out to the need of some refinement of our current bound state approximation for an accurate description of data. These results give additional support to the diabatic approach in QCD as an adequate framework for a complete unified description of conventional and unconventional charmoniumlike resonances. In this respect, the experimental discovery of a predicted 2(++) resonance with a mass around 4 GeV would be of special relevance.
ER