Dynamically generated 0^+ heavy mesons in a heavy chiral unitary approach

Abstract

In terms of the heavy chiral Lagrangian and the unitarized coupled-channel scattering amplitude, interaction between the heavy meson and the light pseudoscalar meson is studied. By looking for the pole of scattering matrix on an appropriate Riemann sheet, a $DK$ bound state $D_{s0}^{\ast }$ with the mass of $2.312\pm 0.041$ GeV is found. This state can be associated as the narrow $D_{sJ}^{\ast }(2317)$ state found recently. In the same way, a $B\bar{K}$ bound state $B_{s0}^{\ast }$ is found, and its mass of $5.725\pm 0.039$ GeV is predicted. The spectra of $D_0^{\ast }$ and $B_0^{\ast }$ with $I=1/2$ are further investigated. One broad and one narrow states are predicted in both charm and bottom sectors. The coupling constants and decay widths of the predicted states are also calculated.

15 pages, 1 figure. One numerical error in Eq.16 corrected

Cited by in corpus (27)

• Dynamically Generated Open and Hidden Charm Meson Systems
• Vector meson-vector meson interaction in a hidden gauge unitary approach
• Strong and radiative decays of the Ds0*(2317) meson in the DK-molecule picture
• Dynamically generated 1^+ heavy mesons
• Origin of resonances in the chiral unitary approach
• Axial Resonances in the Open and Hidden Charm Sectors
• Radiative and isospin-violating decays of Ds mesons in the hadrogenesis conjecture
• Evidence that the Y(4660) is a f_0(980)psi' bound state
• D* K molecular structure of the Ds1(2460) meson
• Subleading contributions to the width of the D_{s0}*(2317)
• Implications of heavy quark spin symmetry on heavy meson hadronic molecules
• Effects of S-wave thresholds
• Hidden charm dynamically generated resonances and the $e^{+}{e}^{-}\to J/\psi D\bar{D}$, $J/\psi D{\bar{D}}^{\ast }$ reactions
• Light Pseudoscalar Meson and Heavy Meson Scattering Lengths
• Molecular structure of the Bs0*(5725) and Bs1(5778) bottom-strange mesons
• The radiative decay of $\psi (3770)$ into the predicted scalar state X(3700)
• Charm and hidden charm scalar mesons in the nuclear medium
• Study of exotic hadrons in S-wave scatterings induced by chiral interaction in the flavor symmetric limit
• Structure of the axial-vector meson $D_{s1}(2460)$ and the strong coupling constant $g_{D_{s1}{D}^{\ast }K}$ with the light-cone QCD sum rules
• Radiative decay of the dynamically generated open and hidden charm scalar meson resonances D_{s0}^*(2317) and X(3700)
• Structure of the $(0^{+},1^{+})$ mesons $B_{s0}$ and $B_{s1}$, and the strong coupling constants $g_{B_{s0}BK}$ and $g_{B_{s1}{B}^{\ast }K}$
• Weak decays of heavy hadron molecules involving the f0(980)
• Hadronic-loop induced mass shifts in scalar heavy-light mesons
• Chiral Unitary Dynamics of Hadrons and Hadrons in a Nuclear Medium
• Strong decays $B_{s0}\to B_s\pi$ and $B_{s1}\to B_s^{\ast }\pi$ with light-cone QCD sum rules
• Meson Resonances in the Open and Hidden Charm Sectors
• Recent Developments in Chiral Unitary Dynamics of Resonances