Resolving the Quenched ${g_A}$ Puzzle in Nuclei and Nuclear Matter

Abstract : The long-standing puzzle of the quenched $g_A$ in nuclei -- and in dense matter -- is shown to have a simple resolution in a scale-symmetric HLS chiral Lagrangian at the Fermi-liquid fixed point. This resolution exposes scale-chiral symmetry, hidden in QCD in the vacuum, emerging in nuclear matter from low density to high compact-star density. It has important implications on "first principles" approaches to nuclear physics, such as the role of multi-body exchange currents in Gamow-Teller matrix elements in nuclei and in neutrinoless double $\beta$ decays for going Beyond the Standard Model.
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https://hal.archives-ouvertes.fr/hal-02350169
Contributor : Inspire Hep <>
Submitted on : Tuesday, November 5, 2019 - 11:48:52 PM
Last modification on : Thursday, November 14, 2019 - 5:50:29 AM

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Mannque Rho. Resolving the Quenched ${g_A}$ Puzzle in Nuclei and Nuclear Matter. 2019. ⟨hal-02350169⟩

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