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

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

2007-05-02

arxiv.org/abs/0705.0254v3

Phys.Rev.D76:014005,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 4 figures, accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.76.014005

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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