The (K)over-barNN system revisited including absorption

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Bayar M., Oset E.

NUCLEAR PHYSICS A, vol.914, pp.349-353, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 914
  • Publication Date: 2013
  • Doi Number: 10.1016/j.nuclphysa.2013.02.005
  • Journal Name: NUCLEAR PHYSICS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.349-353
  • Keywords: Few-body systems, N-N SYSTEM, FADDEEV-EQUATIONS
  • Kocaeli University Affiliated: Yes


We present the Fixed Center Approximation (FCA) to the Faddeev equations for the (K) over bar NN system with S = 0, including the charge exchange mechanisms in the (K) over bar rescattering. The system appears bound by about 35 MeV and the width, omitting two body absorption, is about 50 MeV. We also evaluate the (K) over bar absorption width in the bound (K) over bar NN system by employing the FCA to account for (K) over bar rescattering on the NN cluster. The width of the states found previously for S = 0 and S = 1 is found now to increase by about 30 MeV due to the (K) over bar NN absorption, to a total value of about 80 MeV. (C) 2013 Elsevier B.V. All rights reserved.