Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10725908 | Physics Letters B | 2008 | 5 Pages |
Abstract
We construct the effective chiral Lagrangian involving the D-mesons and Goldstone bosons at next-to-leading order taking into account strong as well as electromagnetic interactions. This allows us to disentangle-to leading order in isospin violation-the electromagnetic and the strong contribution to the D-meson mass differences. In addition, we also apply the interaction to the decay Ds0â(2317)âDsÏ0 under the assumption that the Ds0â(2317) is a hadronic molecule. We find (180±110) keV for the decay width Î(Ds0â(2317)âDsÏ0)-consistent with currently existing experimental constraints as well as previous theoretical investigations. The result provides further evidence that this decay width can serve as a criterion for testing the nature of the Ds0â(2317).
Related Topics
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Authors
Feng-Kun Guo, Christoph Hanhart, Siegfried Krewald, Ulf-G. MeiÃner,