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1.	Zanon, I., et al. (author) High-Precision Spectroscopy of 20O Benchmarking Ab Initio Calculations in Light Nuclei 2023 In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 131:26 Journal article (peer-reviewed)abstract The excited states of unstable 20O were investigated via γ-ray spectroscopy following the 19O(d,p)20O reaction at 8 AMeV. By exploiting the Doppler shift attenuation method, the lifetimes of the 2+2 and 3+1 states were firmly established. From the γ-ray branching and E2/M1 mixing ratios for transitions deexciting the 2+2 and 3+1 states, the B(E2) and B(M1) were determined. Various chiral effective field theory Hamiltonians, describing the nuclear properties beyond ground states, along with a standard USDB interaction, were compared with the experimentally obtained data. Such a comparison for a large set of γ-ray transition probabilities with the valence space in medium similarity renormalization group ab initio calculations was performed for the first time in a nucleus far from stability. It was shown that the ab initio approaches using chiral effective field theory forces are challenged by detailed high-precision spectroscopic properties of nuclei. The reduced transition probabilities were found to be a very constraining test of the performance of the ab initio models.

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Type of publication: journal article (1)

Type of content: peer-reviewed (1)

Author/Editor: Li, H. (1); Siciliano, M. (1); Sanchis, E. (1); Fernandez, D. (1); Pullia, A. (1); Harkness-Brennan, L. ... (1); show more...; Mengoni, D. (1); Recchia, F. (1); Zielinska, M (1); Ramos, D (1); Menendez, J. (1); Bracco, A. (1); Nyberg, Johan, 1955- (1); Valiente-Dobón, J. J ... (1); Barrientos, D. (1); Benzoni, G. (1); Boston, H.C. (1); Clement, E. (1); Désesquelles, P. (1); Didierjean, F. (1); Eberth, J. (1); de France, G. (1); Gadea, A. (1); Gottardo, A. (1); Hess, H. (1); Judson, D. S. (1); Jungclaus, A. (1); Kaşkaş, A. (1); Labiche, M. (1); Lenzi, S.M. (1); Leoni, S. (1); Ljungvall, J. (1); Lopez-Martens, A. (1); Maj, A. (1); Menegazzo, R. (1); Michelagnoli, C. (1); Million, B. (1); Quintana, B. (1); Reiter, P. (1); Salsac, M. D. (1); Stezowski, O. (1); Theisen, Ch. (1); Flavigny, F. (1); Podolyak, Zs. (1); Napoli, D. R. (1); Ackermann, D. (1); Sohler, D. (1); Delaunay, F (1); Assié, M. (1); Beaumel, D. (1); show less...

University: Uppsala University (1)

Language: English (1)

Research subject (UKÄ/SCB): Natural sciences (1)

Year: 2023 (1)

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