%0 Unpublished work
%T Axial-Vector Coupling Constant in Nuclei and Dense Matter
%+ Institut de Physique ThÃ©orique - UMR CNRS 3681 (IPHT)
%A Rho, Mannque
%Z 1 figure
%Z t17/112
%8 2017-07-17
%D 2017
%Z 1705.10864
%Z Physics [physics]/Nuclear Theory [nucl-th]Preprints, Working Papers, ...
%X The in-medium property of the axial-vector coupling constant $g_A$ in nuclei and dense baryonic matter is reformulated in terms of the recently constructed scale-invariant hidden local symmetric ($bs$HLS) Lagrangian. It is shown that unlike the pion decay constant that slides with the vacuum change induced by density, the axial-current constant $g_A$ remains unmodified up to high density relevant to compact stars in nuclear Gamow-Teller transitions (involving the space component of the axial current) whereas it gets strongly enhanced in axial-charge transitions (involving the time component of the axial current) as density nears nuclear matter density $n_0$ and stays more or less constant up to $\sim 6n_0$. The implications of these predictions on giant Gamow-Teller resonances in nuclei and on first-forbidden beta transitions (relevant to nuclear astrophysical processes) are discussed.
%G English
%2 https://cea.hal.science/cea-01562873/document
%2 https://cea.hal.science/cea-01562873/file/1705.10864.pdf
%L cea-01562873
%U https://cea.hal.science/cea-01562873
%~ CEA
%~ CNRS
%~ DSM-IPHT
%~ CEA-UPSAY
%~ UNIV-PARIS-SACLAY
%~ CEA-UPSAY-SACLAY
%~ CEA-DRF
%~ TEST-HALCNRS
%~ GS-MATHEMATIQUES
%~ GS-PHYSIQUE