Abstract
The Giant Pairing Vibration (GPV) is a correlated two-nucleon excitation mode in atomic nuclei predicted long time ago. It is expected to be excited in two-nucleon transfer reactions, similarly to the pairing vibrations feeding the ground states of even-even nuclei near shell-closure. Recent experiments have provided evidence for this mode in \(^{\mathrm {14}}\)C and \(^{\mathrm {15}}\)C nuclei populated via \(^{\mathrm {12}}\)C,\(^{\mathrm {13}}\)C(\(^{\mathrm {18}}\)O,\(^{\mathrm {16}}\)O)\(^{\mathrm {14}}\)C,\(^{\mathrm {15}}\)C two-neutron transfer reactions at 84 MeV beam energy. In the present paper, new data show the persistence of the same structures in the energy spectra of \(^{\mathrm {14}}\)C and \(^{\mathrm {15}}\)C populated by the same reactions at a higher bombarding energy of 275 MeV. The extracted centroid, width, spin-parity and transition probability fully agree with the previous observation thus giving a robust confirmation that the GPV mode is populated in such transfer reactions.
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Data Availability Statement
This manuscript has associated data in a data repository. [Authors’ comment: All data included in this manuscript are available upon reasonable request by contacting the corresponding author.]
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Acknowledgements
The authors wish to acknowledge Prof. R. A. Broglia and Prof. A. Vitturi for fruitful discussions. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No 714625).
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Cappuzzello, F., Carbone, D., Cavallaro, M. et al. Confirmation of Giant Pairing Vibration evidence in \(^{\mathrm {12,13}}\)C(\(^{\mathrm {18}}\)O,\(^{\mathrm {16}}\)O)\(^{\mathrm {14,15}}\)C reactions at 275 MeV. Eur. Phys. J. A 57, 34 (2021). https://doi.org/10.1140/epja/s10050-021-00345-7
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