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. Shibata; S. Yen

doi:10.1016/0370-2693(92)90641-G

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

SCI - Physics

Research output: Contribution to journal › Article › peer-review

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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 ¹¹_ΛB( 5 2⁺) produced through the proton-unbound states in ¹²_ΛC and NM-p and M-π associated with the quasi-bound region (E_x ≈ 20 MeV) in ¹²_ΛC 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 language	English
Pages (from-to)	293-298
Number of pages	6
Journal	Physics Letters B
Volume	282
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(92)90641-G
Publication status	Published - 1992 May 28

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Ajimura, S., Ejiri, H., Fukuda, T., Gill, D. R., Hashimoto, O., Higashi, A., Inoue, G., Iseki, Y., Kimura, K., Kishimoto, T., Lee, L., Maeda, K., Nakamura, F., Nomachi, M., Noumi, H., Ohsumi, H., Ohkusu, J., Olin, A., Sano, H., ... Yen, S. (1992). Polarization and weak decays of Λ hypernuclei produced by the (π⁺, K⁺) reaction on ¹²C. Physics Letters B, 282(3-4), 293-298. https://doi.org/10.1016/0370-2693(92)90641-G

Polarization and weak decays of Λ hypernuclei produced by the (π⁺, K⁺) reaction on ¹²C. / Ajimura, S.; Ejiri, H.; Fukuda, T.; Gill, D. R.; Hashimoto, O.; Higashi, A.; Inoue, G.; Iseki, Y.; Kimura, K.; Kishimoto, T.; Lee, L.; Maeda, K.; Nakamura, F.; Nomachi, M.; Noumi, H.; Ohsumi, H.; Ohkusu, J.; Olin, A.; Sano, H.; Shibata, T.; Yen, S.

In: Physics Letters B, Vol. 282, No. 3-4, 28.05.1992, p. 293-298.

Research output: Contribution to journal › Article › peer-review

Ajimura, S, Ejiri, H, Fukuda, T, Gill, DR, Hashimoto, O, Higashi, A, Inoue, G, Iseki, Y, Kimura, K, Kishimoto, T, Lee, L, Maeda, K, Nakamura, F, Nomachi, M, Noumi, H, Ohsumi, H, Ohkusu, J, Olin, A, Sano, H, Shibata, T & Yen, S 1992, 'Polarization and weak decays of Λ hypernuclei produced by the (π⁺, K⁺) reaction on ¹²C', Physics Letters B, vol. 282, no. 3-4, pp. 293-298. https://doi.org/10.1016/0370-2693(92)90641-G

Ajimura, S. ; Ejiri, H. ; Fukuda, T. ; Gill, D. R. ; Hashimoto, O. ; Higashi, A. ; Inoue, G. ; Iseki, Y. ; Kimura, K. ; Kishimoto, T. ; Lee, L. ; Maeda, K. ; Nakamura, F. ; Nomachi, M. ; Noumi, H. ; Ohsumi, H. ; Ohkusu, J. ; Olin, A. ; Sano, H. ; Shibata, T. ; Yen, S. / Polarization and weak decays of Λ hypernuclei produced by the (π⁺, K⁺) reaction on ¹²C. In: Physics Letters B. 1992 ; Vol. 282, No. 3-4. pp. 293-298.

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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.",

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

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T1 - Polarization and weak decays of Λ hypernuclei produced by the (π+, K+) reaction on 12C

AU - Ajimura, S.

AU - Ejiri, H.

AU - Fukuda, T.

AU - Gill, D. R.

AU - Hashimoto, O.

AU - Higashi, A.

AU - Inoue, G.

AU - Iseki, Y.

AU - Kimura, K.

AU - Kishimoto, T.

AU - Lee, L.

AU - Maeda, K.

AU - Nakamura, F.

AU - Nomachi, M.

AU - Noumi, H.

AU - Ohsumi, H.

AU - Ohkusu, J.

AU - Olin, A.

AU - Sano, H.

AU - Shibata, T.

AU - Yen, S.

PY - 1992/5/28

Y1 - 1992/5/28

N2 - 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.

AB - 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.

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