Isospin Mixing in the Higher Tamm-Dancoff Appromixation

L. Bonneau (1) , J. Le Bloas (1) , P. Quentin (1) , J. Bartel (2) , D. Strottman

1 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
2 IPHC - Institut Pluridisciplinaire Hubert Curien

We present a formalism to study the isospin content of a nuclear state in the framework of the Higher Tamm-Dancoff Approximation. This formalism is then applied to the description of even-even N = Z nuclei. Finally a schematic two-level model provides some insight into the isospin-mixing mechanism at work and the impact of the pairing correlations on the isospin-mixing parameter.

Domaines: Physique Nucléaire Théorique [nucl-th]

L. Bonneau, J. Le Bloas, P. Quentin, J. Bartel, D. Strottman. Isospin Mixing in the Higher Tamm-Dancoff Appromixation. 15th Nuclear Physics Workshop "Marie and Pierre Curie", Sep 2008, Kazimierz, Poland. pp.951-957, ⟨10.1142/S0218301309013099⟩. ⟨in2p3-00394584⟩