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Parity-Transfer (16O, 16F(0–, g.s.)) Reaction as a Selective Probe of Isovector 0– States in Nuclei

Year: 2026
Type: article
Abstract: We demonstrate that the parity-transfer (16O, 16F(0–, g.s.)) reaction provides a selective probe of isovector 0– excitations in nuclei. This reaction selectively populates unnatural-parity states through a $0^+ \rightarrow 0^-$ transition in the projectile. The excitation-energy spectrum of $^{12}\mathrm{B}$ was reconstructed via the ${}^{12}{\rm C}({}^{16}{\rm O},{}^{16}{\rm F}(0^-,{\rm g.s.}))$ reaction at 247 MeV/u from the coincident detection of the ${}^{15}\mathrm{O}+p$ decay products of ${}^{16}\mathrm{F}$. The known $0^{-}$ state at $E_x = 9.3~{\rm MeV}$ was clearly observed with an enhanced forward cross section, confirming the selectivity of the reaction. The structures observed at $E_x = 6.6 \pm 0.4$ and $14.8 \pm 0.3~{\rm MeV}$ exhibit forward-peaked angular distributions and are suggested to contain significant 0– strength. These results demonstrate that the parity-transfer reaction provides a powerful probe of 0– excitations and highlight its potential for systematic studies of spin–isospin modes, including pion-related dynamics, in nuclei.
DOI: 10.1093/ptep/ptag121
Authors: M Dozono, M Ichimura, S Michimasa, M Takaki, M Kobayashi, M Matsushita, S Ota, H Tokieda, N Fukuda, N Inabe, S Kawase, K Kisamori, Y Kiyokawa, K Kobayashi, T Kubo, Y Kubota, C S Lee, H Miya, A Ohkura, H Sagawa, S Sakaguchi, H Sakai, M Sasano, S Shimoura, Y Shindo, L Stuhl, H Suzuki, H Tabata, H Takeda, T Wakasa, K Yako, Y Yanagisawa, J Yasuda, R Yokoyama, K Yoshida, J Zenihiro, T Uesaka
Institutions: Kyoto University, The University of Tokyo, RIKEN Nishina Center, Rikkyo University, Kyushu University, University of Aizu
Language: English
Open Access status: gold
Estimated APC paid: $979
OpenAlex ID: W7166864274
FWCI:
Cites: 26
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