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The K-α scattering length and the reaction dd↦αK+K-

  • V. Yu. Grishina
  • L. A. Kondratyuk
  • A. Sibirtsev
  • M. Büscher
  • S. Krewald
  • U. -G. Meißner
  • F. P. Sassen
Original Article

Abstract.

We present predictions for the K-α scattering length obtained within the framework of the multiple-scattering approach. Evaluating the pole position of the K-α scattering amplitude within the zero-range approximation, we find a loosely bound K-α state with a binding energy of ER = - 2,..., - 7 MeV and a width ΓR = 11,..., 18 MeV. We propose to measure the K-α scattering length through the final-state interaction between the α and K--meson produced in the reaction dd↦αK+K-. It is found that the K-α invariant-mass distribution from this reaction at energies near the threshold provides a new tool to determine the s-wave K-α scattering length.

PACS.

25.10.+s Nuclear reactions involving few-nucleon systems 13.75.-n Hadron-induced low- and intermediate-energy reactions and scattering (energy ⩽ 10 GeV) 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2005

Authors and Affiliations

  • V. Yu. Grishina
    • 1
  • L. A. Kondratyuk
    • 2
  • A. Sibirtsev
    • 3
  • M. Büscher
    • 4
  • S. Krewald
    • 4
  • U. -G. Meißner
    • 3
    • 4
  • F. P. Sassen
    • 3
  1. 1.Institute for Nuclear ResearchMoscowRussia
  2. 2.Institute of Theoretical and Experimental PhysicsMoscowRussia
  3. 3.Helmholtz-Institut für Strahlen- und Kernphysik (Theorie)Universität BonnBonnGermany
  4. 4.Institut für Kernphysik, Forschungszentrum JülichJülichGermany

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