Polarization and weak decays of Λ hypernuclei produced by the (π+, K+) reaction on 12C

S. Ajimura, H. Ejiri, T. Fukuda, D. R. Gill, O. Hashimoto, A. Higashi, G. Inoue, Y. Iseki, K. Kimura, T. Kishimoto, L. Lee, K. Maeda, F. Nakamura, M. Nomachi, H. Noumi, H. Ohsumi, J. Ohkusu, A. Olin, H. Sano, T. ShibataS. Yen

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Abstract

Non-mesonic weak-decay protons (NM-p) and mesonic weak-decay pions (M-π) from Λ produced by the (π+, K+) reaction on 12C have been measured. NM-p from the 11ΛB( 5 2+) produced through the proton-unbound states in 12ΛC and NM-p and M-π associated with the quasi-bound region (Ex ≈ 20 MeV) in 12ΛC show finite asymmetries of A1 = - 0.20 to - 0.35 with respect to the reaction plane. These results indicate finite polarizations of the relevant Λ-hypernuclei and asymmetric NM weak decays.

Original languageEnglish
Pages (from-to)293-298
Number of pages6
JournalPhysics Letters B
Volume282
Issue number3-4
DOIs
Publication statusPublished - 1992 May 28

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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