Towards Precision Muonic X-Ray Measurements of Charge Radii of Light Nuclei

Abstract

We propose an experiment to measure the nuclear charge radii of light elements with up to 20~times higher accuracy. These are essential both for understanding nuclear physics at low energies, and for experimental and theoretical applications in simple atomic systems. Such comparisons advance the understanding of bound-state quantum electrodynamics and are useful for searching for new physics beyond the Standard Model. The energy levels of muonic atoms are highly susceptible to nuclear structure, especially to the mean square charge radius. The radii of the lightest nuclei (with the atomic number, $Z=1,2$) have been determined with high accuracy using laser spectroscopy in muonic atoms, while those of medium mass and above were determined using X-ray spectroscopy with semiconductor detectors. In this communication, we present a new experiment, aiming to obtain precision measurements of the radii of light nuclei $3\le Z\le 10$ using single-photon energy measurements with cryogenic microcalorimeters; a quantum-sensing technology capable of high efficiency with outstanding resolution for low-energy X-rays.

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Cited by in corpus (7)

• Critical evaluation of reference charge radii and applications in mirror nuclei
• The nuclear charge radius of ${}^{13}\mathrm{C}$
• Probing new hadronic forces with heavy exotic atoms
• Irreducible Three-Loop Vacuum-Polarization Correction in Muonic Bound Systems
• Reexamination of vacuum-polarization corrections to the self-energy in muonic bound systems
• Renormalization group analysis of electromagnetic properties of the deuteron
• Reference Quadrupole Moments of Transition Elements from Lamb Shifts in Muonic Atoms