Bayesian analysis of nuclear polarizability corrections to the Lamb shift of muonic H-atoms and He-ions. (1st October 2022)

• Record Type: Journal Article
• Authors: Li Muli, S S; Acharya, B; Hernandez, O J; Bacca, S
• Is Part Of: Journal of physics. Volume 49:Number 10(2022)
• Publication Date: 2022-10-01
• Subjects: Bayesian statistics -- muonic atoms -- nuclear polarizabilities -- uncertainty quantification; Nuclear physics -- Periodicals; Particles (Nuclear physics) -- Periodicals; Physique nucléaire -- Périodiques; Particules (Physique nucléaire) -- Périodiques; Kernfysica; Elementaire deeltjes; 539.7
• DOI: 10.1088/1361-6471/ac81e0
• Languages: English
• ISSNs: 0954-3899

Abstract

Abstract: The extraction of nuclear charge radii from spectroscopy experiments in muonic atoms is currently limited by the large uncertainties associated with the theoretical evaluation of the nuclear polarizability effects. To facilitate calculations, these polarizability corrections are conventionally expressed as an expansion in a dimensionless parameter η, which has been argued in previous literature to hold an approximate value of 0.33 in light-nuclear systems. In this work, we check this claim by doing a Bayesian analysis of the nuclear-polarizability corrections to the Lamb shift in μ 2 H and μ 3 H atoms and in μ 3 He + and μ 4 He + ions at various orders in the η -expansion. Our analysis supports the claim that η ≪ 1 in these systems and finds truncation uncertainties that are similar to the previous estimate, the only exception being the truncation uncertainties in the μ 3 He + ion, which are found to be larger.