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.

arXiv comment29 pages, 15 figures

References in corpus (8)

• A critical view on the deeply bound K^- pp system
• Kaonic nuclei studied based on a new framework of Antisymmetric Molecular Dynamics
• High-density K nuclear systems with isovector deformation
• Invariant-Mass Spectroscopy for Condensed Single- and Double-\kbar Nuclear Clusters to be Formed as Residues in Relativistic Heavy-Ion Collisions
• Strange tribaryons as Kbar-mediated dense nuclear systems
• A critical analysis on deeply bound kaonic states in nuclei
• 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

Cited by in corpus (17)

• The basic K nuclear cluster K- pp and its enhanced formation in the p + p -> K+ + X reaction
• Variational calculations for K-few-nucleon systems
• Strangeness nuclear physics: a critical review on selected topics
• anti-K anti-K N molecule state in three-body calculation
• Search for strange tribaryon states in the inclusive ^4He(K^{-}_{stopped}, p) reaction
• Experimental confirmation of the Lambda(1405) Ansatz from resonant formation of a K-p quasi-bound state in K- absorption by 3He and 4He
• Measurement of the proton spectra from Non-Mesonic Weak Decay of ${}_{\Lambda }^{5}He$, ${}_{\Lambda }^{7}Li$ and ${}_{\Lambda }^{12}C$
• Critical review of [K- ppn] bound states
• Single-pole nature of Lambda (1405) and structure of K-pp
• Correlated $\Lambda t$ pairs from the absorption of $K^{-}$ at rest in light nuclei
• Resonant formation of Lambda(1405) by stopped-K- absorption in deuteron
• Kaonic Nuclear Systems KbarN and KbarNN as Decaying States
• Proton emission off nuclei induced by kaons in flight
• Kaon-condensed hypernuclei as highly dense self-bound objects
• ${\Sigma }^{-}p$ emission rates in $K^{-}$ absorptions at rest on ${}^6$Li, ${}^7$Li, ${}^9$Be, ${}^{13}$C and ${}^{16}$O
• Further considerations concerning claims for deeply bound kaon atoms and reply to criticisms
• Molecule model for kaonic nuclear cluster anti-KNN