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arXiv · 0705.0254

Strong and radiative decays of the Ds0*(2317) meson in the DK-molecule picture

Amand Faessler·Thomas Gutsche·Valery E. Lyubovitskij·Yong-Liang Ma
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Abstract

We consider a possible interpretation of the new charm-strange meson Ds0*(2317) as a hadronic molecule - a bound state of D and K mesons. Using an effective Lagrangian approach we calculate the strong Ds0* to Ds pi0 and radiative Ds0* to Ds* gamma decays. A new impact related to the DK molecular structure of the Ds0*(2317) meson is that the presence of u(d) quarks in the D and K mesons gives rise to a direct strong isospin-violating transition Ds0* to Ds pi0 in addition to the decay mechanism induced by eta-pi0 mixing considered previously. We show that the direct transition dominates over the eta-pi0 mixing transition in the Ds0* to Ds pi0 decay. Our results for the partial decay widths are consistent with previous calculations.

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Amand Faessler, Thomas Gutsche, Valery E. Lyubovitskij, Yong-Liang Ma. 2007-07-10. Strong and radiative decays of the Ds0*(2317) meson in the DK-molecule picture. https://doi.org/10.1103/physrevd.76.014005

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