Emission spectra and invariant masses of Lambda and p in the stopped-K-NN absorption process in 4He and 6Li

Abstract

We have calculated the emission spectra of Y and N and invariant masses of YN pairs in the direct K-NN --> YN absorption process at rest in 4He and light nuclei in order to provide theoretical tools for correct interpretations of experimental data with or without invoking kaonic nuclear bound states. All the momentum distributions are broad with widths around 150-200 MeV/c (except for the case of 6Li target), while the partial invariant mass of each YN pair has a peak around 2310-2330 MeV/c2. We argue against the interpretations of stopped-K- experimental data of KEK and FINUDA by Oset and Toki and by Magas, Oset, Ramos and Toki.

29 pages, 15 figures

References in corpus (2)

• Super strong nuclear force caused by migrating Kbar mesons - Revival of the Heitler-London-Heisenberg scheme in kaonic nuclear clusters
• Indication of a strange tribaryon S^+ from the ^4He(stopped K^-,n) reaction

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• Search for strange tribaryon states in the inclusive ^4He(K^{-}_{stopped}, p) reaction
• Critical review of [K- ppn] bound states
• Kaonic Nuclear Systems KbarN and KbarNN as Decaying States
• Kaon-condensed hypernuclei as highly dense self-bound objects
• Further considerations concerning claims for deeply bound kaon atoms and reply to criticisms