Abstract
It will be shown that the peaks in the (Λp) and (Λd) invariant mass distributions, observed in recent FINUDA experiments and claimed to be signals of deeply bound kaonic states, are naturally explained in terms of K − absorption by two or three nucleons leaving the rest of the original nuclei as spectator. For reactions on heavy nuclei, the subsequent interactions of the particles produced in the primary absorption process with the residual nucleus play an important role. Our analyses leads to the conclusion that at present there is no experimental evidence of deeply bound K − state in nuclei. Although the FINUDA experiments have been done for reasons which are not supported a posteriori, some new physics can be extracted from the data.
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Magas, V.K., Oset, E., Ramos, A.: Critical review of [K- ppn] bound states. Phys. Rev. C 77, 065210 (2008)
Suzuki, T., et al.: Discovery of a strange tribaryon S0(3115) in He-4(stopped K-, p) reaction. Phys. Lett. B 597, 263 (2004)
Oset, E., Toki, H.: A critical analysis on deeply bound kaonic states in nuclei. Phys. Rev. C 74, 015207 (2006)
Agnello, M., et al., [FINUDA Collaboration]: A study of the proton spectra following the capture of K- in Li-6 and C-12 with FINUDA. Nucl. Phys. A 775, 35 (2006)
Sato, M., et al.: Search for strange tribaryon states in the inclusive \(^4He(K^{-}_{stopped}, p)\) reaction. Phys. Lett. B 659, 107 (2008)
Oset, E., Magas, V.K., Ramos, A., Toki, H.: Further considerations concerning claims for deeply bound kaon atoms and reply to criticisms. arXiv:nucl-th/0701023
Ramos, A., Magas, V.K., Oset, E., Toki, H.: The antikaon-nucleus interaction and alternative views to deeply bound antikaonic nuclear systems. Nucl. Phys. A 804, 219 (2008)
Agnello, M., et al. [FINUDA Collaboration]: Evidence for a kaon-bound state K- p p produced in K- absorption reactions at rest. Phys. Rev. Lett. 94, 212303 (2005)
Magas, V.K., Oset, E., Ramos, A., Toki, H.: A critical view on the deeply bound K- p p system. Phys. Rev. C 74, 025206 (2006)
Magas, V.K., Oset, E., Ramos, A., Toki, H.: Critical review of deeply bound kaonic nuclear states. arXiv:nucl-th/0611098
Ramos, A., Magas, V.K., Oset, E., Toki, H.: Conventional View Versus Finuda Claims Of A Deeply Bound K- P P State. Eur. Phys. J. A 31, 684 (2007); A theoretical view on bound antikaon-nuclear states. arXiv:nucl-th/0702019
Agnello, M., et al. [FINUDA Collaboration]: Correlated Λd pairs from the \(K^{-}_{stop} A \to \Lambda d A'\) reaction. Phys. Lett. B 654, 80 (2007)
Suzuki, T., et al. [KEK-PS E549 Collaboration]: Λd correlation from 4He(stopped K −, d) reaction. Phys. Rev. C 76, 068202 (2007)
Vazquez Doce, O.: The AMADEUS experiment and the KLOE data analysis in the search for Kaonic Clusters. In these Proceedings
Gal, A., Klieb, L.: Calculation of (K −,π) hypernuclear yields for stopped kaons in 12C. Phys. Rev. C 34, 956 (1986)
Hirenzaki, S., Okumura, Y., Toki, H., Oset, E., Ramos, A.: Chiral unitary model for the kaonic atom. Phys. Rev. C 61, 055205 (2000)
Singh, S.K., Vicente Vacas, M.J.: Weak quasi-elastic production of hyperons. Phys. Rev. D 74, 053009 (2006)
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Magas, V.K., Oset, E. & Ramos, A. K − absorption in nuclei by two and three nucleons. Hyperfine Interact 193, 209–214 (2009). https://doi.org/10.1007/s10751-009-0002-0
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DOI: https://doi.org/10.1007/s10751-009-0002-0