Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas; VI: Weakened pairing

Goriely, Stéphane; Samyn, Mathieu; Pearson, Michael J.

doi:doi/10.1016/j.nuclphysa.2006.05.002

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Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas; VI: Weakened pairing

par Goriely, Stéphane

;Samyn, Mathieu

;Pearson, Michael J.
Référence Nuclear physics. A, 773, 3-4, page (279-299)
Publication Publié, 2006-07

Article révisé par les pairs

Résumé :

All our previous mass models suffered from the defect of excessively strong pairing, as a result of the pairing parameters being fitted freely to the mass data. Starting from model HFB-9, and maintaining the condition that neutron matter be fitted, we construct four new models in which the pairing is constrained in such a way as to bring down the spectral pairing gap to be close to the experimental even-odd differences. These models differ in the treatment of the pairing, with two making use of Bulgac-Yu regularization. Our best new model, HFB-13, outperforms HFB-9. © 2006 Elsevier B.V. All rights reserved.

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