Isospin-symmetry breaking corrections for the description of triplet energy differences

S. M. Lenzi; M. A. Bentley; R. Lau; C. Aa Diget

doi:10.1103/PhysRevC.98.054322

Isospin-symmetry breaking corrections for the description of triplet energy differences

S. M. Lenzi, M. A. Bentley, R. Lau, C. Aa Diget

Physics

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Abstract

The charge-independence breaking of the nuclear interaction is analyzed by means of energy differences among analog states in T=1 isobaric multiplets. Data on triplet energy differences in the sd, pf, and pfg shells, i.e., 18≤A≤66, are reproduced with very good accuracy by large-scale shell-model calculations taking into account, aside from the Coulomb interaction, a single isotensor schematic interaction of monopole-pairing type. It is shown that the effect on the triplet energy differences of this isospin-breaking interaction is of the same magnitude as the Coulomb one. Moreover, its strength is the same for every single-particle orbital of the considered model space.

Original language	English
Article number	054322
Journal	Physical Review C
Volume	98
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.98.054322
Publication status	Published - 29 Nov 2018

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10.1103/PhysRevC.98.054322

PhysRevC.98.054322
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abstract = "The charge-independence breaking of the nuclear interaction is analyzed by means of energy differences among analog states in T=1 isobaric multiplets. Data on triplet energy differences in the sd, pf, and pfg shells, i.e., 18≤A≤66, are reproduced with very good accuracy by large-scale shell-model calculations taking into account, aside from the Coulomb interaction, a single isotensor schematic interaction of monopole-pairing type. It is shown that the effect on the triplet energy differences of this isospin-breaking interaction is of the same magnitude as the Coulomb one. Moreover, its strength is the same for every single-particle orbital of the considered model space.",

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AU - Bentley, M. A.

AU - Lau, R.

AU - Diget, C. Aa

PY - 2018/11/29

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AB - The charge-independence breaking of the nuclear interaction is analyzed by means of energy differences among analog states in T=1 isobaric multiplets. Data on triplet energy differences in the sd, pf, and pfg shells, i.e., 18≤A≤66, are reproduced with very good accuracy by large-scale shell-model calculations taking into account, aside from the Coulomb interaction, a single isotensor schematic interaction of monopole-pairing type. It is shown that the effect on the triplet energy differences of this isospin-breaking interaction is of the same magnitude as the Coulomb one. Moreover, its strength is the same for every single-particle orbital of the considered model space.

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Isospin-symmetry breaking corrections for the description of triplet energy differences

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