Value of the Axial-Vector Coupling Strength in β and ββ Decays : A Review
Suhonen, J. (2017). Value of the Axial-Vector Coupling Strength in β and ββ Decays : A Review. Frontiers in Physics, 5, 55. https://doi.org/10.3389/fphy.2017.00055
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2017Copyright
© 2017 Suhonen. This is an open-access article distributed under the
terms of the Creative Commons Attribution License (CC BY).
In this review the quenching of the weak axial-vector coupling strength, gA, is discussed
in nuclear β and double-β decays. On one hand, the nuclear-medium and nuclear
many-body effects are separated, and on the other hand the quenching is discussed
from the points of view of different many-body methods and different β-decay and
double-β-decay processes. Both the historical background and the present status are
reviewed and contrasted against each other. The theoretical considerations are tied to
performed and planned measurements, and possible new measurements are urged,
whenever relevant and doable. Relation of the quenching problem to the measurements
of charge-exchange reactions and muon-capture rates is pointed out.
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Frontiers Research FoundationISSN Search the Publication Forum
2296-424XKeywords
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Except where otherwise noted, this item's license is described as © 2017 Suhonen. This is an open-access article distributed under the
terms of the Creative Commons Attribution License (CC BY).
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