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Guo, F.-K. [Author]; Hanhart, Chr. [Author]; Krewald, S. [Author]; Meissner, U.G. [Author]

Subleading contributions to the width of the D*(s0)(2317)

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  • Media type: E-Article
  • Title: Subleading contributions to the width of the D*(s0)(2317)
  • Contributor: Guo, F.-K. [Author]; Hanhart, Chr. [Author]; Krewald, S. [Author]; Meissner, U.G. [Author]
  • Published: North-Holland Publ., 2008
  • Published in: Physics letters / B 666, 251 - 255 (2008). doi:10.1016/j.physletb.2008.07.060
  • Language: English
  • DOI: https://doi.org/10.1016/j.physletb.2008.07.060
  • ISSN: 0370-2693
  • Keywords: numerical calculations ; chiral Lagrangian ; hadronic molecule ; electromagnetic interaction ; strong interaction ; D/s0*(2317): molecule ; D/s0*(2317): width ; D-s0*(2317) ; isospin violation ; D: mass difference ; D/s0*(2317): hadronic decay ; D/s0*(2317) --> D/s pi0 ; effective Lagrangian: chiral ; expansion: higher-order
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  • Description: 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 pi(0) under the assumption that the D-s0* (2317) is a hadronic molecule. We find (180 +/- 110) keV for the decay width Gamma(D-s0*(2317) -> D-s pi(0))-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). (C) 2008 Elsevier B.V. All rights reserved.
  • Access State: Open Access