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Breaking of the SU(4) limit for the Gamow-Teller strength in N ∼ Z nuclei

Petermann, I. and Martínez-Pinedo, G. and Langanke, K. and Caurier, E. :
Breaking of the SU(4) limit for the Gamow-Teller strength in N ∼ Z nuclei.
[Online-Edition: http://dx.doi.org/10.1140/epja/i2007-10502-7]
In: The European Physical Journal A, 34 (3) p. 319. ISSN 1434-6001
[Article] , (2007)

Official URL: http://dx.doi.org/10.1140/epja/i2007-10502-7
Item Type: Article
Erschienen: 2007
Creators: Petermann, I. and Martínez-Pinedo, G. and Langanke, K. and Caurier, E.
Title: Breaking of the SU(4) limit for the Gamow-Teller strength in N ∼ Z nuclei
Language: English
Journal or Publication Title: The European Physical Journal A
Volume: 34
Number: 3
Divisions: DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
05 Department of Physics
05 Department of Physics > Institute of Nuclear Physics
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > D: Theoretische Kernstrukturphysik
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > D: Theoretische Kernstrukturphysik > D3: Theoretische Nukleare Astrophysik
Date Deposited: 20 Jun 2011 07:12
Official URL: http://dx.doi.org/10.1140/epja/i2007-10502-7
Identification Number: doi:10.1140/epja/i2007-10502-7
Alternative Abstract:
Alternative abstract Language
We have performed large-scale shell model calculations of the Gamow-Teller strength distributions in N ? Z pf -shell nuclei. These calculations were motivated by the experimental attempts to measure the low-lying GT strength for the even-even N = Z + 2 or N = Z - 2 nuclei 46Ti , 50Cr , 54Fe and 62Ge , where a sizable low-energy GT strength could be interpreted as reminiscence of SU(4) symmetry; in the limit of exact SU(4) symmetry the GT- strength would be concentrated in a single transition to the lowest T = 0, J = 1+ state in the daughter. We confirm that the SU(4) symmetry is strongly broken by the spin-orbit interaction and by increasing neutron excess.English
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