An ab initio strategy for taming nuclear-structure dependence of V_ud extractions: the ¹⁰C → ¹⁰B superallowed transition

2024/05/29 by Michael Gennari, Mehdi Drissi, Gennari, Michael +7 · 3 citations
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2405.19281

openalex publication_date 2024/05/29 · openalex created_date 2024/05/31 · openalex updated_date 2026/07/28

Abstract

We report the first ab initio calculation of the nuclear-structure-dependent radiative correction δ _NS to the ¹⁰C → ¹⁰B superallowed transition, computed with the no-core shell model and chiral effective field theory. We obtain δ _NS = - 0.422 (29) _nuc (12) _n,el with a 1.6-times reduction in the total uncertainty when compared to the current literature estimate based on the shell model and Fermi gas picture. This work paves the way for a precise determination of V_ud from superallowed beta decays within a systematically improvable framework.

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• Radiative corrections to superallowed beta decays at \mathcal O(α² Z)
• Recent Progress in Ab-Initio Nuclear Theory for Precision Physics Searches in Muonic Atoms and Superallowed β Decays
• High-precision determination of radiative corrections to superallowed nuclear beta decays

Related

• High-precision determination of radiative corrections to superallowed nuclear beta decays
• Quantum Monte Carlo calculation of δ_{\rm NS} in ¹⁰C using an effective field theory approach
• Recent Progress in Ab-Initio Nuclear Theory for Precision Physics Searches in Muonic Atoms and Superallowed β Decays
• The Zα² correction to superallowed beta decays in effective field theory and implications for |V_ud|
• Nuclear beta decays and CKM unitarity