Shell-model study of the 4th- and 6th-forbidden β -decay branches of 48-Ca
Haaranen, M., Horoi, M., & Suhonen, J. (2014). Shell-model study of the 4th- and 6th-forbidden β -decay branches of 48-Ca. Physical Review C, 89(3), Article 034315. https://doi.org/10.1103/PhysRevC.89.034315
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Physical Review CDate
2014Copyright
© 2014 American Physical Society. Published in this repository with the kind permission of the publisher.
The highly forbidden β− decay of 48Ca is reexamined by performing shell-model calculations with the
GXPF1A effective interaction. We examine the three available decay branches to the lowest 6+, 5+, and 4+ states
of 48Sc, and extract a theoretical half-life of T β
1/2 = 5.2+1.7
−1.3 × 1020 g−2
A yr for the β− decay, where gA is the value
of the axial-vector coupling constant. The current half-life estimate suggests stronger competition between the
single-β-decay and double-β-decay branches of 48Ca than previously expected on theoretical grounds.
Publisher
American Physical SocietyISSN Search the Publication Forum
0556-2813Keywords
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