Dynamics and decay of heavy-light hadrons

Abstract

Recent signals for narrow hadrons containing heavy and light flavours are compared with quark model predictions for spectroscopy, strong decays, and radiative transitions. In particular, the production and identification of excited charmed and cs states are examined with emphasis on elucidating the nature of 0 + and 1 + states. Roughly 200 strong decay amplitudes of D and Ds states up to 3.3 GeV are presented. Applications include determining flavour content in η mesons and the mixing angle in P and D wave states and probes of putative molecular states. We advocate searching for radially excited D * s states in B decays.

Open-charm meson spectroscopy

“…In Ref. [45] this decay width was estimated assuming a molecular structure, obtaining a larger value of the order of 17 keV. This makes evident the important difference between the assumed molecular structure of Ref.…”

Higher radial and orbital excitations in the charmed meson family

“…[13]. In addition, the decay width of D(2 1 S 0 ) was calculated by the QPC model [46], which is close to the lower limit of experimental width of D(2550)/D J (2580). In addition, the theoretical studies presented in Refs.…”

Production ofY(4260)as a hadronic molecule state ofD¯DQin1, Xue2, Zhao3 2016Phys. Rev. D424570View full textAdd to dashboardCite

“…in the HQSS limit will decouple to the S-wave cc [25], we will show in this Section that the HQSS breaking will allow a small S-wave component to be mixed to the Y (4260) via the 3 P 1 and 1 P 1 mixing in the D 1 wavefunction. In the quark model, the physical states D 1 (2420) and D 1 (2430) are considered as the mixture of the two quark model states | 1 P 1 and | 3 P 1 [35]. Meanwhile, these two states can be written in terms of the spin-parity of the light quark degrees of freedom in language of HQSS, i.e.…”