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arXiv · 0709.1408

The Quest for Pionic and Kaonic Nuclear Bound Systems Following Yukawa and Tomonaga

Toshimitsu Yamazaki
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Abstract

After sketching some historical events related to Yukawa and Tomonaga concerning the birth of mesons, the author describes recent developments in the spectroscopy of pion-nucleus bound states via "pion-transfer" reactions. The role of pions as Nambu-Goldstone bosons in nuclear media is emphasized by recently obtained experimental evidence for the partial restoration of chiral symmetry breaking. New light is shed on Kbar mesons, which play a unique role in forming dense nuclear systems. The basic unit, K- pp, is predicted to possess a molecular structure with quasi-Lambda(1405) as an "atomic constituent". We find here "super strong nuclear force" produced by a migrating real Kbar meson in the Heitler-London-Heisenberg scheme in place of the normal nuclear force mediated by Yukawa's virtual mesons.

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Toshimitsu Yamazaki. 2007-09-09. The Quest for Pionic and Kaonic Nuclear Bound Systems Following Yukawa and Tomonaga. https://doi.org/10.1143/ptps.170.138

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