2022/12/11 by Mannque Rho, Rho, Mannque
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #Scientific Research and Discoveries
paper · pdf · doi:10.48550/arxiv.2212.05558
openalex publication_date 2022/12/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The superallowed Gamow-Teller transition in the doubly-magic-shell nucleus 100Sn and the high resolution spectral shape analysis in the fourth-forbidden nonunique transition in 115In indicate as much as ∼ 40% \it fundamental quenching in the axial-current coupling constant gA in nuclei. This can be attributed to an effect of the trace anomaly in QCD "emerging" in nuclear medium. If confirmed, this would signal a major revamping to do in nuclear interactions consistent with chiral-scale symmetry in nuclear medium and a big impact on 0ν and νν double β decays for BSM. I present an argument that such a big anomaly-induced quenching is incompatible with how hidden scale symmetry manifests in nuclear medium, A possible means to resolve this issue is discussed in terms of hidden scale symmetry permeating in baryonic matter from normal nuclear matter to massive compact-star matter.