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SAMOP 2023 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 6: Precision Spectroscopy of Atoms and Ions I (joint session A/Q)

A 6.5: Vortrag

Montag, 6. März 2023, 18:15–18:30, F107

1s Hyperfine splitting in Muonic Hydrogen — •Siddharth Rajamohanan1, Ahmed Ouf1, and Randolf Pohl21QUANTUM, Institut für Physik & Exzellenzcluster PRISMA,Johannes Gutenberg Universität Mainz, 55099 Mainz, Germany — 2Institut für Physik, QUANTUM und Exzellenzcluster PRISMA+, Johannes Gutenberg-Universität Mainz,55099 Mainz, Germany

Precision measurements on atoms and ions are a powerful tool for testing bound-state QED theory and the Standard Model [1]. Experiments done in the last decade by the CREMA collaboration on muonic Hydrogen and Helium have given a more accurate understanding of the lightest nuclei charge radius [2,3]. Our present experiment aims at a measurement of ground state Hyperfine Splitting in muonic hydrogen up to a relative accuracy of 1 ppm using pulsed laser spectroscopy. This allows us to determine the Zemach radius, which encodes the magnetic properties of the proton. A unique laser system, multi-pass cavity, and scintillation detection system are necessary for the experiment. We report the current status of our experiment and the recent developments.

[1] M. S. Safronova, D. Budker, D. DeMille, Derek F. Jackson Kimball, A. Derevianko, and Charles W. Clark, Rev. Mod. Phys. 90, 025008 (2018)

[2] R. Pohl et al., Nature 466, 213 (2010)

[3] A. Antognini, et al., Science, Vol. 339, 2013, pp. 417-420

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