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Observation of the 7 MeV excited spin-flip and non-spin-flip partners in 16Λ O by λ-ray spectroscopy

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Abstract

We have observed three λ-ray transitions in 16 Λ O from both 7MeV excited spin-flip and non-spin-flip partners (2, 1 2 ) to the ground-state doublet (1 1 , 0) via the 16O(K , π) reaction. The 7MeV excitation energies of the spin-doublet members (2, 1 2 ) were determined to be 6784 ± 4 ± 4 keV and 6562 ± 1 ± 2 keV, respectively, and thus the spacing was obtained to be 222 ± 4 ± 5 keV. This is the first observation of the spin-flip state directly populated by the (K , π) reaction. Moreover, such directly populated spin-flip and non-spin-flip partners were resolved for the first time.

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© 2007 Società Italiana di Fisica / Springer-Verlag

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Ukai, M. et al. (2007). Observation of the 7 MeV excited spin-flip and non-spin-flip partners in 16Λ O by λ-ray spectroscopy. In: Pochodzalla, J., Walcher, T. (eds) Proceedings of The IX International Conference on Hypernuclear and Strange Particle Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76367-3_5

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