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

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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 Ds 0* with the mass of 2.312 ± 0.041   GeV is found. This state can be associated as the narrow Ds J* (2317) state found recently. In the same way, a B over(K, ̄) bound state Bs 0* is found, and its mass of 5.725 ± 0.039   GeV is predicted. The spectra of D0* and B0* 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. © 2006 Elsevier B.V. All rights reserved.

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Guo, F. K., Shen, P. N., Chiang, H. C., Ping, R. G., & Zou, B. S. (2006). Dynamically generated 0+ heavy mesons in a heavy chiral unitary approach. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 641(3–4), 278–285. https://doi.org/10.1016/j.physletb.2006.08.064

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