Observation of a spin-flip M1 transition in 7ΛLi

H. Tamura, K. Tanida, D. Abe, H. Akikawa, K. Araki, H. Bhang, T. Endo, Y. Fujii, T. Fukuda, O. Hashimoto, K. Imai, H. Hotchi, Y. Kakiguchi, J. H. Kim, Y. D. Kim, T. Miyoshi, T. Murakami, T. Nagae, H. Noumi, H. OutaK. Ozawa, T. Saito, J. Sasao, Y. Sato, S. Satoh, R. I. Sawafta, M. Sekimoto, T. Takahashi, L. Tang, H. H. Xia, S. H. Zhou, L. H. Zhu

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Abstract

Using a large-acceptance germanium detector array (Hyperball), we have observed a spin-flip M1 γ transition between the ground-state spin doublet of 7 Li (3/2+ → 1/2+). The observed energy of 691.7 ± 0.6 (stat) ± 1.0 (syst) keV provides crucial information on the strength of the spin-spin interaction between a Λ and a nucleon. This is the first observation of well-identified hypernuclear γ transitions using germanium detectors.

Original languageEnglish
Pages (from-to)5963-5966
Number of pages4
JournalPhysical Review Letters
Volume84
Issue number26
DOIs
Publication statusPublished - 2000 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Tamura, H., Tanida, K., Abe, D., Akikawa, H., Araki, K., Bhang, H., Endo, T., Fujii, Y., Fukuda, T., Hashimoto, O., Imai, K., Hotchi, H., Kakiguchi, Y., Kim, J. H., Kim, Y. D., Miyoshi, T., Murakami, T., Nagae, T., Noumi, H., ... Zhu, L. H. (2000). Observation of a spin-flip M1 transition in 7ΛLi. Physical Review Letters, 84(26), 5963-5966. https://doi.org/10.1103/PhysRevLett.84.5963