Study of Λ → NN process in polarized Λ5He

T. Kishimoto, S. Ajimura, H. Ejiri, K. Ikeda, M. Ishikawa, T. Nakano, A. Okusu, N. Shinkai, Y. Tanaka, T. Hasegawa, O. Hashimoto, T. Nagae, M. Sekimoto, T. Shibata, H. Noumi, K. Manabe, K. Maeda, T. Takahashi, H. Bhang, H. ParkM. Youn

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Strangeness changing weak hyperon nucleon interaction is studied by observing the weak nonmesonic decay (NM-decay) of Λ hypernuclei (ΛN → NN). Observation of its branching ratios gave spin-isospin structure of the NM-decay. Recently we carried out the experiment to observe asymmetry of protons from the weak NM-decay of the polarized Λ5He hypernucleus. The asymmetry is due to interference between amplitudes with different parities. It is shown that asymmetry parameter elucidates the dominant part of the NM-decay mechanism.

Original languageEnglish
Pages (from-to)205-210
Number of pages6
JournalNuclear Physics, Section A
Volume585
Issue number1-2
DOIs
Publication statusPublished - 1995 Mar 13

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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