Critical review of [K- ppn] bound states

Abstract

We make a thorough study of the process of three body kaon absorption in nuclei, in connection with a recent FINUDA experiment which claims the existence of a deeply bound kaonic state from the observation of a peak in the Lambda d invariant mass distribution following K- absorption on Li6. We show that the peak is naturally explained in terms of K- absorption from three nucleons leaving the rest as spectators. We can also reproduce all the other observables measured in the same experiment and used to support the hypothesis of the deeply bound kaon state. Our study also reveals interesting aspects of kaon absorption in nuclei, a process that must be understood in order to make progress in the search for K- deeply bound states in nuclei.

8 pages, 7 figures. New section "Empirical qualitative discussion of the strength of the reaction" with one new figure is added. Published in PRC

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• In-medium nuclear interactions of low-energy hadrons
• Effective Kbar N interaction based on chiral SU(3) dynamics
• Faddeev calculation of a $K^{-}pp$ quasi-bound state
• K^- p scattering length from scattering experiments
• Strange dibaryon resonance in the anti-KNN--piYN system
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• $\bar{K}$ nuclear bound states in a dynamical model
• Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter
• Search for strange tribaryon states in the inclusive ^4He(K^{-}_{stopped}, p) reaction
• $\Lambda d$ correlations from the ${}^4$He(stopped-$K^{-}$,$d$) reaction
• Emission spectra and invariant masses of Lambda and p in the stopped-K-NN absorption process in 4He and 6Li
• The $\sigma K$ coupling in the chiral unitary approach and the isoscalar $\bar{K}N$, $\bar{K}A$ interaction
• On the momentum-dependence of $K^{-}$-nuclear potentials

Cited by in corpus (6)

• Variational calculation of the ppK^- system based on chiral SU(3) dynamics
• Strangeness nuclear physics: a critical review on selected topics
• Observation of the "$K^{-}pp$"-like structure in the $d({\pi }^{+},K^{+})$ reaction at 1.69 GeV/$c$
• Strange mesons in nuclear matter at finite temperature
• Latest results for the antikaon-nucleon optical potential
• Relativistic symmetry breaking in light kaonic nuclei