Subleading contributions to the width of the D_{s0}*(2317)
arXiv:0806.3374 · doi:10.1016/j.physletb.2008.07.060
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 D_{s0}^*(2317)-> D_s pi0 under the assumption that the D_{s0}^*(2317) is a hadronic molecule. We find (180+-110) keV for the decay width $Γ(D_{s0}^*(2317)-> D_s pi0) -- 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 D_{s0}^*(2317).
11 pages, 2 figures
References in corpus (6)
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- Radiative and isospin-violating decays of Ds mesons in the hadrogenesis conjecture
- Two-photon decays of hadronic molecules
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