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The Giant Pairing Vibration in heavy nuclei

Present status and future studies

  • Regular Article - Experimental Physics
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Abstract.

The Giant Pairing Vibration, a two-nucleon collective mode originating from the second shell above the Fermi surface, has long been predicted and expected to be strongly populated in two-nucleon transfer reactions with cross sections similar to those of the low-lying Pairing Vibration. Recent experiments have provided evidence for this mode in 14, 15C but, despite sensitive studies, it has not been definitively identified in Sn or Pb nuclei where pairing correlations are known to play a crucial role near their ground states. In this paper we review the basic theoretical concepts of this “elusive” state and the status of experimental searches in heavy nuclei. We discuss the hindrance effects due to Q-value mismatch and the use of weakly-bound projectiles as a way to overcome the limitations of the \( (\mathrm{p},\mathrm{t})\) and \( (\mathrm{t},\mathrm{p})\) reactions. We also discuss the role of the continuum and conclude with some possible future developments.

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Authors and Affiliations

  1. Institut de Physique Nucléaire, CNRS/IN2P3, Université de Paris Sud, Université de Paris-Saclay, 91406, Orsay, France

    M. Assié

  2. Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Apartado 1065, E-41080, Sevilla, Spain

    C. H. Dasso

  3. KTH (Royal Institute of Technology), Alba Nova University Center, S-10691, Stockholm, Sweden

    R. J. Liotta

  4. Nuclear Science Division, Lawrence Berkeley National Laboratory, 94720, Berkeley, CA, USA

    A. O. Macchiavelli

  5. Università degli Studi di Padova and INFN, I-35131, Padova, Italy

    A. Vitturi

Authors
  1. M. Assié
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  2. C. H. Dasso
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  3. R. J. Liotta
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  4. A. O. Macchiavelli
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  5. A. Vitturi
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Corresponding author

Correspondence to A. O. Macchiavelli.

Additional information

Communicated by N. Alamanos

Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors' comment: All data used in this review are contained in the article or have been published elsewhere, as referenced in the text.]

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Assié, M., Dasso, C.H., Liotta, R.J. et al. The Giant Pairing Vibration in heavy nuclei. Eur. Phys. J. A 55, 245 (2019). https://doi.org/10.1140/epja/i2019-12829-8

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